libcpp, v2: Add -Winvalid-utf8 warning [PR106655]
Commit Message
On Mon, Aug 29, 2022 at 11:31:54PM -0400, Jason Merrill wrote:
> > The pedwarn on -std=c++23 -finput-charset=UTF-8 or just documenting that
> > "conforming" UTF-8 is only -finput-charset=UTF-8 -Werror=invalid-utf8 ?
>
> The former.
Ok.
So, here is an updated patch that implements that, and also warns/pedwarns
about invalid UTF-8 in string/character literals.
For these, we'd sometimes get errors on conversion to execution charset
(e.g. in [uU]['"] literals), but e.g. for 0x110000 .... 0x7FFFFFFF there
was no diagnostics and similarly nothing for u8" or " literals (when we
were doing a noop conversion).
So far only tested on the new testcases, ok for trunk if it passes full
bootstrap/regtest?
2022-08-30 Jakub Jelinek <jakub@redhat.com>
PR c++/106655
libcpp/
* include/cpplib.h (struct cpp_options): Implement C++23
P2295R6 - Support for UTF-8 as a portable source file encoding.
Add cpp_warn_invalid_utf8 and cpp_input_charset_explicit fields.
(enum cpp_warning_reason): Add CPP_W_INVALID_UTF8 enumerator.
* init.cc (cpp_create_reader): Initialize cpp_warn_invalid_utf8
and cpp_input_charset_explicit.
* lex.cc (UCS_LIMIT): Define.
(utf8_continuation): New const variable.
(utf8_signifier): Move earlier in the file.
(_cpp_warn_invalid_utf8): New function.
(_cpp_skip_block_comment): Handle -Winvalid-utf8 warning.
(skip_line_comment): Likewise.
(lex_raw_string, lex_string): Likewise.
gcc/
* doc/invoke.texi (-Winvalid-utf8): Document it.
gcc/c-family/
* c.opt (-Winvalid-utf8): New warning.
* c-opts.c (c_common_handle_option) <case OPT_finput_charset_>:
Set cpp_opts->cpp_input_charset_explicit.
(c_common_post_options): If -finput-charset=UTF-8 is explicit
in C++23, enable -Winvalid-utf8 by default and if -pedantic
or -pedantic-errors, make it a pedwarn.
gcc/testsuite/
* c-c++-common/cpp/Winvalid-utf8-1.c: New test.
* c-c++-common/cpp/Winvalid-utf8-2.c: New test.
* g++.dg/cpp23/Winvalid-utf8-1.C: New test.
* g++.dg/cpp23/Winvalid-utf8-2.C: New test.
* g++.dg/cpp23/Winvalid-utf8-3.C: New test.
* g++.dg/cpp23/Winvalid-utf8-4.C: New test.
* g++.dg/cpp23/Winvalid-utf8-5.C: New test.
* g++.dg/cpp23/Winvalid-utf8-6.C: New test.
* g++.dg/cpp23/Winvalid-utf8-7.C: New test.
* g++.dg/cpp23/Winvalid-utf8-8.C: New test.
Jakub
Comments
On 8/30/22 11:20, Jakub Jelinek wrote:
> On Mon, Aug 29, 2022 at 11:31:54PM -0400, Jason Merrill wrote:
>>> The pedwarn on -std=c++23 -finput-charset=UTF-8 or just documenting that
>>> "conforming" UTF-8 is only -finput-charset=UTF-8 -Werror=invalid-utf8 ?
>>
>> The former.
>
> Ok.
>
> So, here is an updated patch that implements that, and also warns/pedwarns
> about invalid UTF-8 in string/character literals.
> For these, we'd sometimes get errors on conversion to execution charset
> (e.g. in [uU]['"] literals), but e.g. for 0x110000 .... 0x7FFFFFFF there
> was no diagnostics and similarly nothing for u8" or " literals (when we
> were doing a noop conversion).
>
> So far only tested on the new testcases, ok for trunk if it passes full
> bootstrap/regtest?
>
> 2022-08-30 Jakub Jelinek <jakub@redhat.com>
>
> PR c++/106655
> libcpp/
> * include/cpplib.h (struct cpp_options): Implement C++23
> P2295R6 - Support for UTF-8 as a portable source file encoding.
> Add cpp_warn_invalid_utf8 and cpp_input_charset_explicit fields.
> (enum cpp_warning_reason): Add CPP_W_INVALID_UTF8 enumerator.
> * init.cc (cpp_create_reader): Initialize cpp_warn_invalid_utf8
> and cpp_input_charset_explicit.
> * lex.cc (UCS_LIMIT): Define.
> (utf8_continuation): New const variable.
> (utf8_signifier): Move earlier in the file.
> (_cpp_warn_invalid_utf8): New function.
> (_cpp_skip_block_comment): Handle -Winvalid-utf8 warning.
> (skip_line_comment): Likewise.
> (lex_raw_string, lex_string): Likewise.
> gcc/
> * doc/invoke.texi (-Winvalid-utf8): Document it.
> gcc/c-family/
> * c.opt (-Winvalid-utf8): New warning.
> * c-opts.c (c_common_handle_option) <case OPT_finput_charset_>:
> Set cpp_opts->cpp_input_charset_explicit.
> (c_common_post_options): If -finput-charset=UTF-8 is explicit
> in C++23, enable -Winvalid-utf8 by default and if -pedantic
> or -pedantic-errors, make it a pedwarn.
> gcc/testsuite/
> * c-c++-common/cpp/Winvalid-utf8-1.c: New test.
> * c-c++-common/cpp/Winvalid-utf8-2.c: New test.
> * g++.dg/cpp23/Winvalid-utf8-1.C: New test.
> * g++.dg/cpp23/Winvalid-utf8-2.C: New test.
> * g++.dg/cpp23/Winvalid-utf8-3.C: New test.
> * g++.dg/cpp23/Winvalid-utf8-4.C: New test.
> * g++.dg/cpp23/Winvalid-utf8-5.C: New test.
> * g++.dg/cpp23/Winvalid-utf8-6.C: New test.
> * g++.dg/cpp23/Winvalid-utf8-7.C: New test.
> * g++.dg/cpp23/Winvalid-utf8-8.C: New test.
>
> --- libcpp/include/cpplib.h.jj 2022-08-29 14:58:32.645982297 +0200
> +++ libcpp/include/cpplib.h 2022-08-30 13:38:46.618815415 +0200
> @@ -560,6 +560,13 @@ struct cpp_options
> cpp_bidirectional_level. */
> unsigned char cpp_warn_bidirectional;
>
> + /* True if libcpp should warn about invalid UTF-8 characters in comments.
> + 2 if it should be a pedwarn. */
> + unsigned char cpp_warn_invalid_utf8;
> +
> + /* True if -finput-charset= option has been used explicitly. */
> + bool cpp_input_charset_explicit;
> +
> /* Dependency generation. */
> struct
> {
> @@ -666,7 +673,8 @@ enum cpp_warning_reason {
> CPP_W_CXX11_COMPAT,
> CPP_W_CXX20_COMPAT,
> CPP_W_EXPANSION_TO_DEFINED,
> - CPP_W_BIDIRECTIONAL
> + CPP_W_BIDIRECTIONAL,
> + CPP_W_INVALID_UTF8
> };
>
> /* Callback for header lookup for HEADER, which is the name of a
> --- libcpp/init.cc.jj 2022-08-29 14:58:32.646982284 +0200
> +++ libcpp/init.cc 2022-08-30 13:39:49.784965506 +0200
> @@ -227,6 +227,8 @@ cpp_create_reader (enum c_lang lang, cpp
> CPP_OPTION (pfile, ext_numeric_literals) = 1;
> CPP_OPTION (pfile, warn_date_time) = 0;
> CPP_OPTION (pfile, cpp_warn_bidirectional) = bidirectional_unpaired;
> + CPP_OPTION (pfile, cpp_warn_invalid_utf8) = 0;
> + CPP_OPTION (pfile, cpp_input_charset_explicit) = 0;
>
> /* Default CPP arithmetic to something sensible for the host for the
> benefit of dumb users like fix-header. */
> --- libcpp/lex.cc.jj 2022-08-29 14:58:32.669981977 +0200
> +++ libcpp/lex.cc 2022-08-30 16:56:12.793868707 +0200
> @@ -50,6 +50,9 @@ static const struct token_spelling token
> #define TOKEN_SPELL(token) (token_spellings[(token)->type].category)
> #define TOKEN_NAME(token) (token_spellings[(token)->type].name)
>
> +/* ISO 10646 defines the UCS codespace as the range 0-0x10FFFF inclusive. */
> +#define UCS_LIMIT 0x10FFFF
> +
> static void add_line_note (cpp_buffer *, const uchar *, unsigned int);
> static int skip_line_comment (cpp_reader *);
> static void skip_whitespace (cpp_reader *, cppchar_t);
> @@ -1704,6 +1707,116 @@ maybe_warn_bidi_on_char (cpp_reader *pfi
> bidi::on_char (kind, ucn_p, loc);
> }
>
> +static const cppchar_t utf8_continuation = 0x80;
> +static const cppchar_t utf8_signifier = 0xC0;
> +
> +/* Emit -Winvalid-utf8 warning on invalid UTF-8 character starting
> + at PFILE->buffer->cur. Return a pointer after the diagnosed
> + invalid character. */
> +
> +static const uchar *
> +_cpp_warn_invalid_utf8 (cpp_reader *pfile, bool comment_p)
> +{
> + cpp_buffer *buffer = pfile->buffer;
> + const uchar *cur = buffer->cur;
> + bool pedantic = (CPP_PEDANTIC (pfile)
> + && CPP_OPTION (pfile, cpp_warn_invalid_utf8) == 2);
> +
> + if (cur[0] < utf8_signifier
> + || cur[1] < utf8_continuation || cur[1] >= utf8_signifier)
> + {
> + if (pedantic)
> + cpp_error_with_line (pfile, CPP_DL_PEDWARN,
> + pfile->line_table->highest_line,
> + CPP_BUF_COL (buffer),
> + comment_p
> + ? N_("invalid UTF-8 character <%x> in comment")
> + : N_("invalid UTF-8 character <%x> in literal"),
> + cur[0]);
> + else
> + cpp_warning_with_line (pfile, CPP_W_INVALID_UTF8,
> + pfile->line_table->highest_line,
> + CPP_BUF_COL (buffer),
> + comment_p
> + ? N_("invalid UTF-8 character <%x> in comment")
> + : N_("invalid UTF-8 character <%x> in literal"),
> + cur[0]);
> + return cur + 1;
> + }
> + else if (cur[2] < utf8_continuation || cur[2] >= utf8_signifier)
> + {
> + if (pedantic)
> + cpp_error_with_line (pfile, CPP_DL_PEDWARN,
> + pfile->line_table->highest_line,
> + CPP_BUF_COL (buffer),
> + comment_p
> + ? N_("invalid UTF-8 character "
> + "<%x><%x> in comment")
> + : N_("invalid UTF-8 character "
> + "<%x><%x> in literal"),
> + cur[0], cur[1]);
> + else
> + cpp_warning_with_line (pfile, CPP_W_INVALID_UTF8,
> + pfile->line_table->highest_line,
> + CPP_BUF_COL (buffer),
> + comment_p
> + ? N_("invalid UTF-8 character "
> + "<%x><%x> in comment")
> + : N_("invalid UTF-8 character "
> + "<%x><%x> in literal"),
> + cur[0], cur[1]);
> + return cur + 2;
> + }
> + else if (cur[3] < utf8_continuation || cur[3] >= utf8_signifier)
> + {
> + if (pedantic)
> + cpp_error_with_line (pfile, CPP_DL_PEDWARN,
> + pfile->line_table->highest_line,
> + CPP_BUF_COL (buffer),
> + comment_p
> + ? N_("invalid UTF-8 character "
> + "<%x><%x><%x> in comment")
> + : N_("invalid UTF-8 character "
> + "<%x><%x><%x> in literal"),
> + cur[0], cur[1], cur[2]);
> + else
> + cpp_warning_with_line (pfile, CPP_W_INVALID_UTF8,
> + pfile->line_table->highest_line,
> + CPP_BUF_COL (buffer),
> + comment_p
> + ? N_("invalid UTF-8 character "
> + "<%x><%x><%x> in comment")
> + : N_("invalid UTF-8 character "
> + "<%x><%x><%x> in literal"),
> + cur[0], cur[1], cur[2]);
> + return cur + 3;
> + }
> + else
> + {
> + if (pedantic)
> + cpp_error_with_line (pfile, CPP_DL_PEDWARN,
> + pfile->line_table->highest_line,
> + CPP_BUF_COL (buffer),
> + comment_p
> + ? "invalid UTF-8 character "
> + "<%x><%x><%x><%x> in comment"
> + : "invalid UTF-8 character "
> + "<%x><%x><%x><%x> in literal",
> + cur[0], cur[1], cur[2], cur[3]);
> + else
> + cpp_warning_with_line (pfile, CPP_W_INVALID_UTF8,
> + pfile->line_table->highest_line,
> + CPP_BUF_COL (buffer),
> + comment_p
> + ? "invalid UTF-8 character "
> + "<%x><%x><%x><%x> in comment"
> + : "invalid UTF-8 character "
> + "<%x><%x><%x><%x> in literal",
> + cur[0], cur[1], cur[2], cur[3]);
> + return cur + 4;
> + }
> +}
> +
> /* Skip a C-style block comment. We find the end of the comment by
> seeing if an asterisk is before every '/' we encounter. Returns
> nonzero if comment terminated by EOF, zero otherwise.
> @@ -1716,6 +1829,8 @@ _cpp_skip_block_comment (cpp_reader *pfi
> const uchar *cur = buffer->cur;
> uchar c;
> const bool warn_bidi_p = pfile->warn_bidi_p ();
> + const bool warn_invalid_utf8_p = CPP_OPTION (pfile, cpp_warn_invalid_utf8);
> + const bool warn_bidi_or_invalid_utf8_p = warn_bidi_p | warn_invalid_utf8_p;
>
> cur++;
> if (*cur == '/')
> @@ -1765,13 +1880,32 @@ _cpp_skip_block_comment (cpp_reader *pfi
>
> cur = buffer->cur;
> }
> - /* If this is a beginning of a UTF-8 encoding, it might be
> - a bidirectional control character. */
> - else if (__builtin_expect (c == bidi::utf8_start, 0) && warn_bidi_p)
> - {
> - location_t loc;
> - bidi::kind kind = get_bidi_utf8 (pfile, cur - 1, &loc);
> - maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
> + else if (__builtin_expect (c >= utf8_continuation, 0)
> + && warn_bidi_or_invalid_utf8_p)
> + {
> + /* If this is a beginning of a UTF-8 encoding, it might be
> + a bidirectional control character. */
> + if (c == bidi::utf8_start && warn_bidi_p)
> + {
> + location_t loc;
> + bidi::kind kind = get_bidi_utf8 (pfile, cur - 1, &loc);
> + maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
> + }
> + if (!warn_invalid_utf8_p)
> + continue;
> + if (c >= utf8_signifier)
> + {
> + cppchar_t s;
> + const uchar *pstr = cur - 1;
> + if (_cpp_valid_utf8 (pfile, &pstr, buffer->rlimit, 0, NULL, &s)
> + && s <= UCS_LIMIT)
> + {
> + cur = pstr;
> + continue;
> + }
> + }
> + buffer->cur = cur - 1;
> + cur = _cpp_warn_invalid_utf8 (pfile, true);
This hunk now seems worth factoring out of the four places it occurs.
It also seems the comment for _cpp_valid_utf8 needs to be updated: it
currently says it's not called when parsing a string.
> }
> }
>
> @@ -1789,11 +1923,13 @@ skip_line_comment (cpp_reader *pfile)
> cpp_buffer *buffer = pfile->buffer;
> location_t orig_line = pfile->line_table->highest_line;
> const bool warn_bidi_p = pfile->warn_bidi_p ();
> + const bool warn_invalid_utf8_p = CPP_OPTION (pfile, cpp_warn_invalid_utf8);
> + const bool warn_bidi_or_invalid_utf8_p = warn_bidi_p | warn_invalid_utf8_p;
>
> - if (!warn_bidi_p)
> + if (!warn_bidi_or_invalid_utf8_p)
> while (*buffer->cur != '\n')
> buffer->cur++;
> - else
> + else if (!warn_invalid_utf8_p)
> {
> while (*buffer->cur != '\n'
> && *buffer->cur != bidi::utf8_start)
> @@ -1813,6 +1949,38 @@ skip_line_comment (cpp_reader *pfile)
> maybe_warn_bidi_on_close (pfile, buffer->cur);
> }
> }
> + else
> + {
> + while (*buffer->cur != '\n')
> + {
> + if (*buffer->cur < utf8_continuation)
> + {
> + buffer->cur++;
> + continue;
> + }
> + if (__builtin_expect (*buffer->cur == bidi::utf8_start, 0)
> + && warn_bidi_p)
> + {
> + location_t loc;
> + bidi::kind kind = get_bidi_utf8 (pfile, buffer->cur, &loc);
> + maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
> + }
> + if (*buffer->cur >= utf8_signifier)
> + {
> + cppchar_t s;
> + const uchar *pstr = buffer->cur;
> + if (_cpp_valid_utf8 (pfile, &pstr, buffer->rlimit, 0, NULL, &s)
> + && s <= UCS_LIMIT)
> + {
> + buffer->cur = pstr;
> + continue;
> + }
> + }
> + buffer->cur = _cpp_warn_invalid_utf8 (pfile, true);
> + }
> + if (warn_bidi_p)
> + maybe_warn_bidi_on_close (pfile, buffer->cur);
> + }
>
> _cpp_process_line_notes (pfile, true);
> return orig_line != pfile->line_table->highest_line;
> @@ -1919,8 +2087,6 @@ warn_about_normalization (cpp_reader *pf
> }
> }
>
> -static const cppchar_t utf8_signifier = 0xC0;
> -
> /* Returns TRUE if the sequence starting at buffer->cur is valid in
> an identifier. FIRST is TRUE if this starts an identifier. */
>
> @@ -2361,6 +2527,8 @@ lex_raw_string (cpp_reader *pfile, cpp_t
> {
> const uchar *pos = base;
> const bool warn_bidi_p = pfile->warn_bidi_p ();
> + const bool warn_invalid_utf8_p = CPP_OPTION (pfile, cpp_warn_invalid_utf8);
> + const bool warn_bidi_or_invalid_utf8_p = warn_bidi_p | warn_invalid_utf8_p;
>
> /* 'tis a pity this information isn't passed down from the lexer's
> initial categorization of the token. */
> @@ -2597,12 +2765,31 @@ lex_raw_string (cpp_reader *pfile, cpp_t
> pos = base = pfile->buffer->cur;
> note = &pfile->buffer->notes[pfile->buffer->cur_note];
> }
> - else if (__builtin_expect ((unsigned char) c == bidi::utf8_start, 0)
> - && warn_bidi_p)
> + else if (__builtin_expect ((unsigned char) c >= utf8_continuation, 0)
> + && warn_bidi_or_invalid_utf8_p)
> {
> - location_t loc;
> - bidi::kind kind = get_bidi_utf8 (pfile, pos - 1, &loc);
> - maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
> + if ((unsigned char) c == bidi::utf8_start && warn_bidi_p)
> + {
> + location_t loc;
> + bidi::kind kind = get_bidi_utf8 (pfile, pos - 1, &loc);
> + maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
> + }
> + if (!warn_invalid_utf8_p)
> + continue;
> + if ((unsigned char) c >= utf8_signifier)
> + {
> + cppchar_t s;
> + const uchar *pstr = pos - 1;
> + if (_cpp_valid_utf8 (pfile, &pstr, pfile->buffer->rlimit, 0,
> + NULL, &s)
> + && s <= UCS_LIMIT)
> + {
> + pos = pstr;
> + continue;
> + }
> + }
> + pfile->buffer->cur = pos - 1;
> + pos = _cpp_warn_invalid_utf8 (pfile, false);
> }
> }
>
> @@ -2704,6 +2891,8 @@ lex_string (cpp_reader *pfile, cpp_token
> terminator = '>', type = CPP_HEADER_NAME;
>
> const bool warn_bidi_p = pfile->warn_bidi_p ();
> + const bool warn_invalid_utf8_p = CPP_OPTION (pfile, cpp_warn_invalid_utf8);
> + const bool warn_bidi_or_invalid_utf8_p = warn_bidi_p | warn_invalid_utf8_p;
> for (;;)
> {
> cppchar_t c = *cur++;
> @@ -2745,11 +2934,31 @@ lex_string (cpp_reader *pfile, cpp_token
> }
> else if (c == '\0')
> saw_NUL = true;
> - else if (__builtin_expect (c == bidi::utf8_start, 0) && warn_bidi_p)
> + else if (__builtin_expect (c >= utf8_continuation, 0)
> + && warn_bidi_or_invalid_utf8_p)
> {
> - location_t loc;
> - bidi::kind kind = get_bidi_utf8 (pfile, cur - 1, &loc);
> - maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
> + if (c == bidi::utf8_start && warn_bidi_p)
> + {
> + location_t loc;
> + bidi::kind kind = get_bidi_utf8 (pfile, cur - 1, &loc);
> + maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
> + }
> + if (!warn_invalid_utf8_p)
> + continue;
> + if (c >= utf8_signifier)
> + {
> + cppchar_t s;
> + const uchar *pstr = cur - 1;
> + if (_cpp_valid_utf8 (pfile, &pstr, pfile->buffer->rlimit, 0,
> + NULL, &s)
> + && s <= UCS_LIMIT)
> + {
> + cur = pstr;
> + continue;
> + }
> + }
> + pfile->buffer->cur = cur - 1;
> + cur = _cpp_warn_invalid_utf8 (pfile, false);
> }
> }
>
> --- gcc/doc/invoke.texi.jj 2022-08-29 14:58:32.619982644 +0200
> +++ gcc/doc/invoke.texi 2022-08-30 16:42:52.129579000 +0200
> @@ -365,9 +365,9 @@ Objective-C and Objective-C++ Dialects}.
> -Winfinite-recursion @gol
> -Winit-self -Winline -Wno-int-conversion -Wint-in-bool-context @gol
> -Wno-int-to-pointer-cast -Wno-invalid-memory-model @gol
> --Winvalid-pch -Wjump-misses-init -Wlarger-than=@var{byte-size} @gol
> --Wlogical-not-parentheses -Wlogical-op -Wlong-long @gol
> --Wno-lto-type-mismatch -Wmain -Wmaybe-uninitialized @gol
> +-Winvalid-pch -Winvalid-utf8 -Wjump-misses-init @gol
> +-Wlarger-than=@var{byte-size} -Wlogical-not-parentheses -Wlogical-op @gol
> +-Wlong-long -Wno-lto-type-mismatch -Wmain -Wmaybe-uninitialized @gol
> -Wmemset-elt-size -Wmemset-transposed-args @gol
> -Wmisleading-indentation -Wmissing-attributes -Wmissing-braces @gol
> -Wmissing-field-initializers -Wmissing-format-attribute @gol
> @@ -9569,6 +9569,14 @@ different size.
> Warn if a precompiled header (@pxref{Precompiled Headers}) is found in
> the search path but cannot be used.
>
> +@item -Winvalid-utf8
> +@opindex Winvalid-utf8
> +@opindex Wno-invalid-utf8
> +Warn if an invalid UTF-8 character is found inside of a comment or
> +character or string literals.
> +This warning is on by default for C++23 if @option{-finput-charset=UTF-8}
> +is used and turned into error with @option{-pedantic-errors}.
> +
> @item -Wlong-long
> @opindex Wlong-long
> @opindex Wno-long-long
> --- gcc/c-family/c.opt.jj 2022-08-29 14:58:32.586983084 +0200
> +++ gcc/c-family/c.opt 2022-08-30 12:59:01.971768141 +0200
> @@ -821,6 +821,10 @@ Winvalid-pch
> C ObjC C++ ObjC++ CPP(warn_invalid_pch) CppReason(CPP_W_INVALID_PCH) Var(cpp_warn_invalid_pch) Init(0) Warning
> Warn about PCH files that are found but not used.
>
> +Winvalid-utf8
> +C objC C++ ObjC++ CPP(cpp_warn_invalid_utf8) CppReason(CPP_W_INVALID_UTF8) Var(warn_invalid_utf8) Init(0) Warning
> +Warn about invalid UTF-8 characters in comments.
> +
> Wjump-misses-init
> C ObjC Var(warn_jump_misses_init) Warning LangEnabledby(C ObjC,Wc++-compat)
> Warn when a jump misses a variable initialization.
> --- gcc/c-family/c-opts.cc.jj 2022-08-17 16:59:08.619552629 +0200
> +++ gcc/c-family/c-opts.cc 2022-08-30 14:27:27.111675228 +0200
> @@ -534,6 +534,7 @@ c_common_handle_option (size_t scode, co
>
> case OPT_finput_charset_:
> cpp_opts->input_charset = arg;
> + cpp_opts->cpp_input_charset_explicit = 1;
> break;
>
> case OPT_ftemplate_depth_:
> @@ -1152,6 +1153,17 @@ c_common_post_options (const char **pfil
> lang_hooks.preprocess_options (parse_in);
> cpp_post_options (parse_in);
> init_global_opts_from_cpp (&global_options, cpp_get_options (parse_in));
> + /* For C++23 and explicit -finput-charset=UTF-8, turn on -Winvalid-utf8
> + by default and make it a pedwarn unless -Wno-invalid-utf8. */
> + if (cxx_dialect >= cxx23
> + && cpp_opts->cpp_input_charset_explicit
> + && strcmp (cpp_opts->input_charset, "UTF-8") == 0
> + && (cpp_opts->cpp_warn_invalid_utf8
> + || !global_options_set.x_warn_invalid_utf8))
> + {
> + global_options.x_warn_invalid_utf8 = 1;
> + cpp_opts->cpp_warn_invalid_utf8 = cpp_opts->cpp_pedantic ? 2 : 1;
> + }
>
> /* Let diagnostics infrastructure know how to convert input files the same
> way libcpp will do it, namely using the configured input charset and
> --- gcc/testsuite/c-c++-common/cpp/Winvalid-utf8-1.c.jj 2022-08-30 12:59:01.971768141 +0200
> +++ gcc/testsuite/c-c++-common/cpp/Winvalid-utf8-1.c 2022-08-30 15:05:39.011892953 +0200
> @@ -0,0 +1,43 @@
> +// P2295R6 - Support for UTF-8 as a portable source file encoding
> +// This test intentionally contains various byte sequences which are not valid UTF-8
> +// { dg-do preprocess }
> +// { dg-options "-finput-charset=UTF-8 -Winvalid-utf8" }
> +
> +// a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" }
> +// a�a { dg-warning "invalid UTF-8 character <80> in comment" }
> +// a�a { dg-warning "invalid UTF-8 character <bf> in comment" }
> +// a�a { dg-warning "invalid UTF-8 character <c0> in comment" }
> +// a�a { dg-warning "invalid UTF-8 character <c1> in comment" }
> +// a�a { dg-warning "invalid UTF-8 character <f5> in comment" }
> +// a�a { dg-warning "invalid UTF-8 character <ff> in comment" }
> +// a�a { dg-warning "invalid UTF-8 character <c2> in comment" }
> +// a�a { dg-warning "invalid UTF-8 character <e0> in comment" }
> +// a���a { dg-warning "invalid UTF-8 character <e0><80><bf> in comment" }
> +// a���a { dg-warning "invalid UTF-8 character <e0><9f><80> in comment" }
> +// a��a { dg-warning "invalid UTF-8 character <e0><bf> in comment" }
> +// a��a { dg-warning "invalid UTF-8 character <ec><80> in comment" }
> +// a���a { dg-warning "invalid UTF-8 character <ed><a0><80> in comment" }
> +// a����a { dg-warning "invalid UTF-8 character <f0><80><80><80> in comment" }
> +// a����a { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in comment" }
> +// a����a { dg-warning "invalid UTF-8 character <f4><90><80><80> in comment" }
> +// a������a { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in comment" }
> +// { dg-warning "invalid UTF-8 character <bf> in comment" "" { target *-*-* } .-1 }
> +/* a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" } */
> +/* a�a { dg-warning "invalid UTF-8 character <80> in comment" } */
> +/* a�a { dg-warning "invalid UTF-8 character <bf> in comment" } */
> +/* a�a { dg-warning "invalid UTF-8 character <c0> in comment" } */
> +/* a�a { dg-warning "invalid UTF-8 character <c1> in comment" } */
> +/* a�a { dg-warning "invalid UTF-8 character <f5> in comment" } */
> +/* a�a { dg-warning "invalid UTF-8 character <ff> in comment" } */
> +/* a�a { dg-warning "invalid UTF-8 character <c2> in comment" } */
> +/* a�a { dg-warning "invalid UTF-8 character <e0> in comment" } */
> +/* a���a { dg-warning "invalid UTF-8 character <e0><80><bf> in comment" } */
> +/* a���a { dg-warning "invalid UTF-8 character <e0><9f><80> in comment" } */
> +/* a��a { dg-warning "invalid UTF-8 character <e0><bf> in comment" } */
> +/* a��a { dg-warning "invalid UTF-8 character <ec><80> in comment" } */
> +/* a���a { dg-warning "invalid UTF-8 character <ed><a0><80> in comment" } */
> +/* a����a { dg-warning "invalid UTF-8 character <f0><80><80><80> in comment" } */
> +/* a����a { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in comment" } */
> +/* a����a { dg-warning "invalid UTF-8 character <f4><90><80><80> in comment" } */
> +/* a������a { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in comment" } */
> +/* { dg-warning "invalid UTF-8 character <bf> in comment" "" { target *-*-* } .-1 } */
> --- gcc/testsuite/c-c++-common/cpp/Winvalid-utf8-2.c.jj 2022-08-30 16:59:42.943057445 +0200
> +++ gcc/testsuite/c-c++-common/cpp/Winvalid-utf8-2.c 2022-08-30 17:03:02.189390222 +0200
> @@ -0,0 +1,88 @@
> +// P2295R6 - Support for UTF-8 as a portable source file encoding
> +// This test intentionally contains various byte sequences which are not valid UTF-8
> +// { dg-do preprocess { target { c || c++11 } } }
> +// { dg-require-effective-target wchar }
> +// { dg-options "-finput-charset=UTF-8 -Winvalid-utf8" }
> +// { dg-additional-options "-std=gnu99" { target c } }
> +
> +#ifndef __cplusplus
> +#include <wchar.h>
> +typedef __CHAR16_TYPE__ char16_t;
> +typedef __CHAR32_TYPE__ char32_t;
> +#endif
> +
> +char32_t a = U'�'; // { dg-warning "invalid UTF-8 character <80> in literal" }
> +char32_t b = U'�'; // { dg-warning "invalid UTF-8 character <bf> in literal" }
> +char32_t c = U'�'; // { dg-warning "invalid UTF-8 character <c0> in literal" }
> +char32_t d = U'�'; // { dg-warning "invalid UTF-8 character <c1> in literal" }
> +char32_t e = U'�'; // { dg-warning "invalid UTF-8 character <f5> in literal" }
> +char32_t f = U'�'; // { dg-warning "invalid UTF-8 character <ff> in literal" }
> +char32_t g = U'�'; // { dg-warning "invalid UTF-8 character <c2> in literal" }
> +char32_t h = U'�'; // { dg-warning "invalid UTF-8 character <e0> in literal" }
> +char32_t i = U'���'; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" }
> +char32_t j = U'���'; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" }
> +char32_t k = U'��'; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" }
> +char32_t l = U'��'; // { dg-warning "invalid UTF-8 character <ec><80> in literal" }
> +char32_t m = U'���'; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" }
> +char32_t n = U'����'; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" }
> +char32_t o = U'����'; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" }
> +char32_t p = U'����'; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" }
> +char32_t q = U'������'; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" }
> + // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target *-*-* } .-1 }
> +const char32_t *A = U"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
> +const char32_t *B = U"�"; // { dg-warning "invalid UTF-8 character <80> in literal" }
> +const char32_t *C = U"�"; // { dg-warning "invalid UTF-8 character <bf> in literal" }
> +const char32_t *D = U"�"; // { dg-warning "invalid UTF-8 character <c0> in literal" }
> +const char32_t *E = U"�"; // { dg-warning "invalid UTF-8 character <c1> in literal" }
> +const char32_t *F = U"�"; // { dg-warning "invalid UTF-8 character <f5> in literal" }
> +const char32_t *G = U"�"; // { dg-warning "invalid UTF-8 character <ff> in literal" }
> +const char32_t *H = U"�"; // { dg-warning "invalid UTF-8 character <c2> in literal" }
> +const char32_t *I = U"�"; // { dg-warning "invalid UTF-8 character <e0> in literal" }
> +const char32_t *J = U"���"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" }
> +const char32_t *K = U"���"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" }
> +const char32_t *L = U"��"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" }
> +const char32_t *M = U"��"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" }
> +const char32_t *N = U"���"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" }
> +const char32_t *O = U"����"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" }
> +const char32_t *P = U"����"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" }
> +const char32_t *Q = U"����"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" }
> +const char32_t *R = U"������"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" }
> + // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target *-*-* } .-1 }
> +const char32_t *A1 = UR"(߿ࠀ𐀀)"; // { dg-bogus "invalid UTF-8 character" }
> +const char32_t *B1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <80> in literal" }
> +const char32_t *C1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <bf> in literal" }
> +const char32_t *D1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c0> in literal" }
> +const char32_t *E1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c1> in literal" }
> +const char32_t *F1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <f5> in literal" }
> +const char32_t *G1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <ff> in literal" }
> +const char32_t *H1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c2> in literal" }
> +const char32_t *I1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <e0> in literal" }
> +const char32_t *J1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" }
> +const char32_t *K1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" }
> +const char32_t *L1 = UR"(��)"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" }
> +const char32_t *M1 = UR"(��)"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" }
> +const char32_t *N1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" }
> +const char32_t *O1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" }
> +const char32_t *P1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" }
> +const char32_t *Q1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" }
> +const char32_t *R1 = UR"(������)"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" }
> + // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target *-*-* } .-1 }
> +const char *A2 = u8"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
> +const char *B2 = u8"�"; // { dg-warning "invalid UTF-8 character <80> in literal" }
> +const char *C2 = u8"�"; // { dg-warning "invalid UTF-8 character <bf> in literal" }
> +const char *D2 = u8"�"; // { dg-warning "invalid UTF-8 character <c0> in literal" }
> +const char *E2 = u8"�"; // { dg-warning "invalid UTF-8 character <c1> in literal" }
> +const char *F2 = u8"�"; // { dg-warning "invalid UTF-8 character <f5> in literal" }
> +const char *G2 = u8"�"; // { dg-warning "invalid UTF-8 character <ff> in literal" }
> +const char *H2 = u8"�"; // { dg-warning "invalid UTF-8 character <c2> in literal" }
> +const char *I2 = u8"�"; // { dg-warning "invalid UTF-8 character <e0> in literal" }
> +const char *J2 = u8"���"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" }
> +const char *K2 = u8"���"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" }
> +const char *L2 = u8"��"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" }
> +const char *M2 = u8"��"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" }
> +const char *N2 = u8"���"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" }
> +const char *O2 = u8"���?"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" }
> +const char *P2 = u8"����"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" }
> +const char *Q2 = u8"����"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" }
> +const char *R2 = u8"������"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" }
> + // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target *-*-* } .-1 }
> --- gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-1.C.jj 2022-08-30 14:08:42.515672782 +0200
> +++ gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-1.C 2022-08-30 15:13:08.844830193 +0200
> @@ -0,0 +1,43 @@
> +// P2295R6 - Support for UTF-8 as a portable source file encoding
> +// This test intentionally contains various byte sequences which are not valid UTF-8
> +// { dg-do preprocess }
> +// { dg-options "-finput-charset=UTF-8" }
> +
> +// a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" }
> +// a�a { dg-warning "invalid UTF-8 character <80> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <c0> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <c1> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <f5> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <ff> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <c2> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <e0> in comment" "" { target c++23 } }
> +// a���a { dg-warning "invalid UTF-8 character <e0><80><bf> in comment" "" { target c++23 } }
> +// a���a { dg-warning "invalid UTF-8 character <e0><9f><80> in comment" "" { target c++23 } }
> +// a��a { dg-warning "invalid UTF-8 character <e0><bf> in comment" "" { target c++23 } }
> +// a��a { dg-warning "invalid UTF-8 character <ec><80> in comment" "" { target c++23 } }
> +// a?��a { dg-warning "invalid UTF-8 character <ed><a0><80> in comment" "" { target c++23 } }
> +// a����a { dg-warning "invalid UTF-8 character <f0><80><80><80> in comment" "" { target c++23 } }
> +// a����a { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in comment" "" { target c++23 } }
> +// a����a { dg-warning "invalid UTF-8 character <f4><90><80><80> in comment" "" { target c++23 } }
> +// a������a { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in comment" "" { target c++23 } }
> +// { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } .-1 }
> +/* a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" } */
> +/* a�a { dg-warning "invalid UTF-8 character <80> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <c0> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <c1> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <f5> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <ff> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <c2> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <e0> in comment" "" { target c++23 } } */
> +/* a���a { dg-warning "invalid UTF-8 character <e0><80><bf> in comment" "" { target c++23 } } */
> +/* a���a { dg-warning "invalid UTF-8 character <e0><9f><80> in comment" "" { target c++23 } } */
> +/* a��a { dg-warning "invalid UTF-8 character <e0><bf> in comment" "" { target c++23 } } */
> +/* a��a { dg-warning "invalid UTF-8 character <ec><80> in comment" "" { target c++23 } } */
> +/* a���a { dg-warning "invalid UTF-8 character <ed><a0><80> in comment" "" { target c++23 } } */
> +/* a����a { dg-warning "invalid UTF-8 character <f0><80><80><80> in comment" "" { target c++23 } } */
> +/* a����a { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in comment" "" { target c++23 } } */
> +/* a����a { dg-warning "invalid UTF-8 character <f4><90><80><80> in comment" "" { target c++23 } } */
> +/* a������a { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in comment" "" { target c++23 } } */
> +/* { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } .-1 } */
> --- gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-2.C.jj 2022-08-30 14:09:30.498029302 +0200
> +++ gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-2.C 2022-08-30 15:13:40.887397995 +0200
> @@ -0,0 +1,43 @@
> +// P2295R6 - Support for UTF-8 as a portable source file encoding
> +// This test intentionally contains various byte sequences which are not valid UTF-8
> +// { dg-do preprocess }
> +// { dg-options "-finput-charset=UTF-8 -pedantic" }
> +
> +// a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" }
> +// a�a { dg-warning "invalid UTF-8 character <80> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <c0> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <c1> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <f5> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <ff> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <c2> in comment" "" { target c++23 } }
> +// a�a { dg-warning "invalid UTF-8 character <e0> in comment" "" { target c++23 } }
> +// a���a { dg-warning "invalid UTF-8 character <e0><80><bf> in comment" "" { target c++23 } }
> +// a���a { dg-warning "invalid UTF-8 character <e0><9f><80> in comment" "" { target c++23 } }
> +// a��a { dg-warning "invalid UTF-8 character <e0><bf> in comment" "" { target c++23 } }
> +// a��a { dg-warning "invalid UTF-8 character <ec><80> in comment" "" { target c++23 } }
> +// a���a { dg-warning "invalid UTF-8 character <ed><a0><80> in comment" "" { target c++23 } }
> +// a����a { dg-warning "invalid UTF-8 character <f0><80><80><80> in comment" "" { target c++23 } }
> +// a����a { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in comment" "" { target c++23 } }
> +// a����a { dg-warning "invalid UTF-8 character <f4><90><80><80> in comment" "" { target c++23 } }
> +// a������a { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in comment" "" { target c++23 } }
> +// { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } .-1 }
> +/* a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" } */
> +/* a�a { dg-warning "invalid UTF-8 character <80> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <c0> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <c1> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <f5> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <ff> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <c2> in comment" "" { target c++23 } } */
> +/* a�a { dg-warning "invalid UTF-8 character <e0> in comment" "" { target c++23 } } */
> +/* a���a { dg-warning "invalid UTF-8 character <e0><80><bf> in comment" "" { target c++23 } } */
> +/* a���a { dg-warning "invalid UTF-8 character <e0><9f><80> in comment" "" { target c++23 } } */
> +/* a��a { dg-warning "invalid UTF-8 character <e0><bf> in comment" "" { target c++23 } } */
> +/* a��a { dg-warning "invalid UTF-8 character <ec><80> in comment" "" { target c++23 } } */
> +/* a���a { dg-warning "invalid UTF-8 character <ed><a0><80> in comment" "" { target c++23 } } */
> +/* a����a { dg-warning "invalid UTF-8 character <f0><80><80><80> in comment" "" { target c++23 } } */
> +/* a����a { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in comment" "" { target c++23 } } */
> +/* a����a { dg-warning "invalid UTF-8 character <f4><90><80><80> in comment" "" { target c++23 } } */
> +/* a������a { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in comment" "" { target c++23 } } */
> +/* { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } .-1 } */
> --- gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-3.C.jj 2022-08-30 14:10:17.278404614 +0200
> +++ gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-3.C 2022-08-30 15:15:30.277922541 +0200
> @@ -0,0 +1,43 @@
> +// P2295R6 - Support for UTF-8 as a portable source file encoding
> +// This test intentionally contains various byte sequences which are not valid UTF-8
> +// { dg-do preprocess }
> +// { dg-options "-finput-charset=UTF-8 -pedantic-errors" }
> +
> +// a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" }
> +// a�a { dg-error "invalid UTF-8 character <80> in comment" "" { target c++23 } }
> +// a�a { dg-error "invalid UTF-8 character <bf> in comment" "" { target c++23 } }
> +// a�a { dg-error "invalid UTF-8 character <c0> in comment" "" { target c++23 } }
> +// a�a { dg-error "invalid UTF-8 character <c1> in comment" "" { target c++23 } }
> +// a�a { dg-error "invalid UTF-8 character <f5> in comment" "" { target c++23 } }
> +// a�a { dg-error "invalid UTF-8 character <ff> in comment" "" { target c++23 } }
> +// a�a { dg-error "invalid UTF-8 character <c2> in comment" "" { target c++23 } }
> +// a�a { dg-error "invalid UTF-8 character <e0> in comment" "" { target c++23 } }
> +// a���a { dg-error "invalid UTF-8 character <e0><80><bf> in comment" "" { target c++23 } }
> +// a���a { dg-error "invalid UTF-8 character <e0><9f><80> in comment" "" { target c++23 } }
> +// a��a { dg-error "invalid UTF-8 character <e0><bf> in comment" "" { target c++23 } }
> +// a��a { dg-error "invalid UTF-8 character <ec><80> in comment" "" { target c++23 } }
> +// a���a { dg-error "invalid UTF-8 character <ed><a0><80> in comment" "" { target c++23 } }
> +// a����a { dg-error "invalid UTF-8 character <f0><80><80><80> in comment" "" { target c++23 } }
> +// a����a { dg-error "invalid UTF-8 character <f0><8f><bf><bf> in comment" "" { target c++23 } }
> +// a����a { dg-error "invalid UTF-8 character <f4><90><80><80> in comment" "" { target c++23 } }
> +// a������a { dg-error "invalid UTF-8 character <fd><bf><bf><bf> in comment" "" { target c++23 } }
> +// { dg-error "invalid UTF-8 character <bf> in comment" "" { target c++23 } .-1 }
> +/* a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" } */
> +/* a�a { dg-error "invalid UTF-8 character <80> in comment" "" { target c++23 } } */
> +/* a�a { dg-error "invalid UTF-8 character <bf> in comment" "" { target c++23 } } */
> +/* a�a { dg-error "invalid UTF-8 character <c0> in comment" "" { target c++23 } } */
> +/* a�a { dg-error "invalid UTF-8 character <c1> in comment" "" { target c++23 } } */
> +/* a�a { dg-error "invalid UTF-8 character <f5> in comment" "" { target c++23 } } */
> +/* a�a { dg-error "invalid UTF-8 character <ff> in comment" "" { target c++23 } } */
> +/* a�a { dg-error "invalid UTF-8 character <c2> in comment" "" { target c++23 } } */
> +/* a�a { dg-error "invalid UTF-8 character <e0> in comment" "" { target c++23 } } */
> +/* a���a { dg-error "invalid UTF-8 character <e0><80><bf> in comment" "" { target c++23 } } */
> +/* a���a { dg-error "invalid UTF-8 character <e0><9f><80> in comment" "" { target c++23 } } */
> +/* a��a { dg-error "invalid UTF-8 character <e0><bf> in comment" "" { target c++23 } } */
> +/* a��a { dg-error "invalid UTF-8 character <ec><80> in comment" "" { target c++23 } } */
> +/* a���a { dg-error "invalid UTF-8 character <ed><a0><80> in comment" "" { target c++23 } } */
> +/* a����a { dg-error "invalid UTF-8 character <f0><80><80><80> in comment" "" { target c++23 } } */
> +/* a����a { dg-error "invalid UTF-8 character <f0><8f><bf><bf> in comment" "" { target c++23 } } */
> +/* a����a { dg-error "invalid UTF-8 character <f4><90><80><80> in comment" "" { target c++23 } } */
> +/* a������a { dg-error "invalid UTF-8 character <fd><bf><bf><bf> in comment" "" { target c++23 } } */
> +/* { dg-error "invalid UTF-8 character <bf> in comment" "" { target c++23 } .-1 } */
> --- gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-4.C.jj 2022-08-30 14:25:33.367204912 +0200
> +++ gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-4.C 2022-08-30 15:15:56.213572726 +0200
> @@ -0,0 +1,43 @@
> +// P2295R6 - Support for UTF-8 as a portable source file encoding
> +// This test intentionally contains various byte sequences which are not valid UTF-8
> +// { dg-do preprocess }
> +// { dg-options "-finput-charset=UTF-8 -pedantic-errors -Wno-invalid-utf8" }
> +
> +// a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" }
> +// a�a { dg-bogus "invalid UTF-8 character <80> in comment" }
> +// a�a { dg-bogus "invalid UTF-8 character <bf> in comment" }
> +// a�a { dg-bogus "invalid UTF-8 character <c0> in comment" }
> +// a�a { dg-bogus "invalid UTF-8 character <c1> in comment" }
> +// a�a { dg-bogus "invalid UTF-8 character <f5> in comment" }
> +// a�a { dg-bogus "invalid UTF-8 character <ff> in comment" }
> +// a�a { dg-bogus "invalid UTF-8 character <c2> in comment" }
> +// a�a { dg-bogus "invalid UTF-8 character <e0> in comment" }
> +// a���a { dg-bogus "invalid UTF-8 character <e0><80><bf> in comment" }
> +// a���a { dg-bogus "invalid UTF-8 character <e0><9f><80> in comment" }
> +// a��a { dg-bogus "invalid UTF-8 character <e0><bf> in comment" }
> +// a��a { dg-bogus "invalid UTF-8 character <ec><80> in comment" }
> +// a���a { dg-bogus "invalid UTF-8 character <ed><a0><80> in comment" }
> +// a����a { dg-bogus "invalid UTF-8 character <f0><80><80><80> in comment" }
> +// a����a { dg-bogus "invalid UTF-8 character <f0><8f><bf><bf> in comment" }
> +// a����a { dg-bogus "invalid UTF-8 character <f4><90><80><80> in comment" }
> +// a������a { dg-bogus "invalid UTF-8 character <fd><bf><bf><bf> in comment" }
> +// { dg-bogus "invalid UTF-8 character <bf> in comment" "" { target *-*-* } .-1 }
> +/* a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" } */
> +/* a�a { dg-bogus "invalid UTF-8 character <80> in comment" } */
> +/* a�a { dg-bogus "invalid UTF-8 character <bf> in comment" } */
> +/* a�a { dg-bogus "invalid UTF-8 character <c0> in comment" } */
> +/* a�a { dg-bogus "invalid UTF-8 character <c1> in comment" } */
> +/* a�a { dg-bogus "invalid UTF-8 character <f5> in comment" } */
> +/* a�a { dg-bogus "invalid UTF-8 character <ff> in comment" } */
> +/* a�a { dg-bogus "invalid UTF-8 character <c2> in comment" } */
> +/* a�a { dg-bogus "invalid UTF-8 character <e0> in comment" } */
> +/* a���a { dg-bogus "invalid UTF-8 character <e0><80><bf> in comment" } */
> +/* a���a { dg-bogus "invalid UTF-8 character <e0><9f><80> in comment" } */
> +/* a��a { dg-bogus "invalid UTF-8 character <e0><bf> in comment" } */
> +/* a��a { dg-bogus "invalid UTF-8 character <ec><80> in comment" } */
> +/* a���a { dg-bogus "invalid UTF-8 character <ed><a0><80> in comment" } */
> +/* a����a { dg-bogus "invalid UTF-8 character <f0><80><80><80> in comment" } */
> +/* a����a { dg-bogus "invalid UTF-8 character <f0><8f><bf><bf> in comment" } */
> +/* a����a { dg-bogus "invalid UTF-8 character <f4><90><80><80> in comment" } */
> +/* a������a { dg-bogus "invalid UTF-8 character <fd><bf><bf><bf> in comment" } */
> +/* { dg-bogus "invalid UTF-8 character <bf> in comment" "" { target *-*-* } .-1 } */
> --- gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-5.C.jj 2022-08-30 15:23:19.780598450 +0200
> +++ gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-5.C 2022-08-30 16:53:40.250909343 +0200
> @@ -0,0 +1,80 @@
> +// P2295R6 - Support for UTF-8 as a portable source file encoding
> +// This test intentionally contains various byte sequences which are not valid UTF-8
> +// { dg-do preprocess { target c++11 } }
> +// { dg-options "-finput-charset=UTF-8" }
> +
> +char32_t a = U'�'; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +char32_t b = U'�'; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +char32_t c = U'�'; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +char32_t d = U'�'; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +char32_t e = U'�'; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +char32_t f = U'�'; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +char32_t g = U'�'; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +char32_t h = U'�'; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +char32_t i = U'���'; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +char32_t j = U'���'; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +char32_t k = U'��'; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +char32_t l = U'��'; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +char32_t m = U'���'; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +char32_t n = U'����'; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +char32_t o = U'����'; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +char32_t p = U'����'; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +char32_t q = U'������'; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> +auto A = U"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
> +auto B = U"�"; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +auto C = U"�"; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +auto D = U"�"; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +auto E = U"�"; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +auto F = U"�"; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +auto G = U"�"; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +auto H = U"�"; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +auto I = U"�"; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +auto J = U"���"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +auto K = U"���"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +auto L = U"��"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +auto M = U"��"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +auto N = U"���"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +auto O = U"����"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +auto P = U"����"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +auto Q = U"����"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +auto R = U"������"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> +auto A1 = UR"(߿ࠀ𐀀)"; // { dg-bogus "invalid UTF-8 character" }
> +auto B1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +auto C1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +auto D1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +auto E1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +auto F1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +auto G1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +auto H1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +auto I1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +auto J1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +auto K1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +auto L1 = UR"(��)"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +auto M1 = UR"(��)"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +auto N1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +auto O1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +auto P1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +auto Q1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +auto R1 = UR"(������)"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> +auto A2 = u8"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
> +auto B2 = u8"�"; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +auto C2 = u8"�"; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +auto D2 = u8"�"; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +auto E2 = u8"�"; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +auto F2 = u8"�"; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +auto G2 = u8"�"; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +auto H2 = u8"�"; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +auto I2 = u8"�"; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +auto J2 = u8"���"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +auto K2 = u8"���"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +auto L2 = u8"��"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +auto M2 = u8"��"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +auto N2 = u8"���"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +auto O2 = u8"����"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +auto P2 = u8"����"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +auto Q2 = u8"����"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +auto R2 = u8"������"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> --- gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-6.C.jj 2022-08-30 16:54:35.458170811 +0200
> +++ gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-6.C 2022-08-30 16:53:31.846021778 +0200
> @@ -0,0 +1,80 @@
> +// P2295R6 - Support for UTF-8 as a portable source file encoding
> +// This test intentionally contains various byte sequences which are not valid UTF-8
> +// { dg-do preprocess { target c++11 } }
> +// { dg-options "-finput-charset=UTF-8 -pedantic" }
> +
> +char32_t a = U'�'; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +char32_t b = U'�'; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +char32_t c = U'�'; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +char32_t d = U'�'; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +char32_t e = U'�'; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +char32_t f = U'�'; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +char32_t g = U'�'; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +char32_t h = U'�'; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +char32_t i = U'���'; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +char32_t j = U'���'; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +char32_t k = U'��'; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +char32_t l = U'��'; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +char32_t m = U'���'; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +char32_t n = U'����'; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +char32_t o = U'����'; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +char32_t p = U'����'; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +char32_t q = U'������'; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> +auto A = U"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
> +auto B = U"�"; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +auto C = U"�"; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +auto D = U"�"; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +auto E = U"�"; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +auto F = U"�"; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +auto G = U"�"; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +auto H = U"�"; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +auto I = U"�"; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +auto J = U"���"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +auto K = U"���"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +auto L = U"��"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +auto M = U"��"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +auto N = U"���"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +auto O = U"����"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +auto P = U"����"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +auto Q = U"����"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +auto R = U"������"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> +auto A1 = UR"(߿ࠀ𐀀)"; // { dg-bogus "invalid UTF-8 character" }
> +auto B1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +auto C1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +auto D1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +auto E1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +auto F1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +auto G1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +auto H1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +auto I1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +auto J1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +auto K1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +auto L1 = UR"(��)"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +auto M1 = UR"(��)"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +auto N1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +auto O1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +auto P1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +auto Q1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +auto R1 = UR"(������)"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> +auto A2 = u8"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
> +auto B2 = u8"�"; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +auto C2 = u8"�"; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +auto D2 = u8"�"; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +auto E2 = u8"�"; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +auto F2 = u8"�"; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +auto G2 = u8"�"; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +auto H2 = u8"�"; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +auto I2 = u8"�"; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +auto J2 = u8"���"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +auto K2 = u8"���"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +auto L2 = u8"��"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +auto M2 = u8"��"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +auto N2 = u8"���"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +auto O2 = u8"����"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +auto P2 = u8"����"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +auto Q2 = u8"����"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +auto R2 = u8"������"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> --- gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-7.C.jj 2022-08-30 16:54:32.891205153 +0200
> +++ gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-7.C 2022-08-30 16:54:06.422559241 +0200
> @@ -0,0 +1,80 @@
> +// P2295R6 - Support for UTF-8 as a portable source file encoding
> +// This test intentionally contains various byte sequences which are not valid UTF-8
> +// { dg-do preprocess { target c++11 } }
> +// { dg-options "-finput-charset=UTF-8 -pedantic-errors" }
> +
> +char32_t a = U'�'; // { dg-error "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +char32_t b = U'�'; // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +char32_t c = U'�'; // { dg-error "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +char32_t d = U'�'; // { dg-error "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +char32_t e = U'�'; // { dg-error "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +char32_t f = U'�'; // { dg-error "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +char32_t g = U'�'; // { dg-error "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +char32_t h = U'�'; // { dg-error "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +char32_t i = U'���'; // { dg-error "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +char32_t j = U'���'; // { dg-error "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +char32_t k = U'��'; // { dg-error "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +char32_t l = U'��'; // { dg-error "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +char32_t m = U'���'; // { dg-error "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +char32_t n = U'����'; // { dg-error "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +char32_t o = U'����'; // { dg-error "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +char32_t p = U'����'; // { dg-error "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +char32_t q = U'������'; // { dg-error "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> +auto A = U"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
> +auto B = U"�"; // { dg-error "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +auto C = U"�"; // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +auto D = U"�"; // { dg-error "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +auto E = U"�"; // { dg-error "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +auto F = U"�"; // { dg-error "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +auto G = U"�"; // { dg-error "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +auto H = U"�"; // { dg-error "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +auto I = U"�"; // { dg-error "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +auto J = U"���"; // { dg-error "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +auto K = U"���"; // { dg-error "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +auto L = U"��"; // { dg-error "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +auto M = U"��"; // { dg-error "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +auto N = U"���"; // { dg-error "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +auto O = U"����"; // { dg-error "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +auto P = U"����"; // { dg-error "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +auto Q = U"����"; // { dg-error "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +auto R = U"������"; // { dg-error "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> +auto A1 = UR"(߿ࠀ𐀀)"; // { dg-bogus "invalid UTF-8 character" }
> +auto B1 = UR"(�)"; // { dg-error "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +auto C1 = UR"(�)"; // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +auto D1 = UR"(�)"; // { dg-error "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +auto E1 = UR"(�)"; // { dg-error "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +auto F1 = UR"(�)"; // { dg-error "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +auto G1 = UR"(�)"; // { dg-error "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +auto H1 = UR"(�)"; // { dg-error "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +auto I1 = UR"(�)"; // { dg-error "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +auto J1 = UR"(���)"; // { dg-error "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +auto K1 = UR"(���)"; // { dg-error "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +auto L1 = UR"(��)"; // { dg-error "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +auto M1 = UR"(��)"; // { dg-error "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +auto N1 = UR"(���)"; // { dg-error "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +auto O1 = UR"(����)"; // { dg-error "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +auto P1 = UR"(����)"; // { dg-error "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +auto Q1 = UR"(����)"; // { dg-error "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +auto R1 = UR"(������)"; // { dg-error "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> +auto A2 = u8"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
> +auto B2 = u8"�"; // { dg-error "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +auto C2 = u8"�"; // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +auto D2 = u8"�"; // { dg-error "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +auto E2 = u8"�"; // { dg-error "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +auto F2 = u8"�"; // { dg-error "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +auto G2 = u8"�"; // { dg-error "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +auto H2 = u8"�"; // { dg-error "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +auto I2 = u8"�"; // { dg-error "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +auto J2 = u8"���"; // { dg-error "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +auto K2 = u8"���"; // { dg-error "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +auto L2 = u8"��"; // { dg-error "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +auto M2 = u8"��"; // { dg-error "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +auto N2 = u8"���"; // { dg-error "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +auto O2 = u8"����"; // { dg-error "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +auto P2 = u8"����"; // { dg-error "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +auto Q2 = u8"����"; // { dg-error "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +auto R2 = u8"������"; // { dg-error "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> --- gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-8.C.jj 2022-08-30 16:54:29.867245604 +0200
> +++ gcc/testsuite/g++.dg/cpp23/Winvalid-utf8-8.C 2022-08-30 16:54:50.737966411 +0200
> @@ -0,0 +1,80 @@
> +// P2295R6 - Support for UTF-8 as a portable source file encoding
> +// This test intentionally contains various byte sequences which are not valid UTF-8
> +// { dg-do preprocess { target c++11 } }
> +// { dg-options "-finput-charset=UTF-8 -pedantic-errors -Wno-invalid-utf8" }
> +
> +char32_t a = U'�'; // { dg-bogus "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +char32_t b = U'�'; // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +char32_t c = U'�'; // { dg-bogus "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +char32_t d = U'�'; // { dg-bogus "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +char32_t e = U'�'; // { dg-bogus "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +char32_t f = U'�'; // { dg-bogus "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +char32_t g = U'�'; // { dg-bogus "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +char32_t h = U'�'; // { dg-bogus "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +char32_t i = U'���'; // { dg-bogus "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +char32_t j = U'���'; // { dg-bogus "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +char32_t k = U'��'; // { dg-bogus "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +char32_t l = U'��'; // { dg-bogus "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +char32_t m = U'���'; // { dg-bogus "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +char32_t n = U'����'; // { dg-bogus "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +char32_t o = U'����'; // { dg-bogus "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +char32_t p = U'����'; // { dg-bogus "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +char32_t q = U'������'; // { dg-bogus "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> +auto A = U"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
> +auto B = U"�"; // { dg-bogus "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +auto C = U"�"; // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +auto D = U"�"; // { dg-bogus "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +auto E = U"�"; // { dg-bogus "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +auto F = U"�"; // { dg-bogus "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +auto G = U"�"; // { dg-bogus "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +auto H = U"�"; // { dg-bogus "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +auto I = U"�"; // { dg-bogus "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +auto J = U"���"; // { dg-bogus "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +auto K = U"���"; // { dg-bogus "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +auto L = U"��"; // { dg-bogus "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +auto M = U"��"; // { dg-bogus "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +auto N = U"���"; // { dg-bogus "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +auto O = U"����"; // { dg-bogus "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +auto P = U"����"; // { dg-bogus "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +auto Q = U"����"; // { dg-bogus "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +auto R = U"������"; // { dg-bogus "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> +auto A1 = UR"(߿ࠀ𐀀)"; // { dg-bogus "invalid UTF-8 character" }
> +auto B1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +auto C1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +auto D1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +auto E1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +auto F1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +auto G1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +auto H1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +auto I1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +auto J1 = UR"(���)"; // { dg-bogus "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +auto K1 = UR"(���)"; // { dg-bogus "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +auto L1 = UR"(��)"; // { dg-bogus "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +auto M1 = UR"(��)"; // { dg-bogus "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +auto N1 = UR"(���)"; // { dg-bogus "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +auto O1 = UR"(����)"; // { dg-bogus "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +auto P1 = UR"(����)"; // { dg-bogus "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +auto Q1 = UR"(����)"; // { dg-bogus "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +auto R1 = UR"(������)"; // { dg-bogus "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
> +auto A2 = u8"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
> +auto B2 = u8"�"; // { dg-bogus "invalid UTF-8 character <80> in literal" "" { target c++23 } }
> +auto C2 = u8"�"; // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
> +auto D2 = u8"�"; // { dg-bogus "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
> +auto E2 = u8"�"; // { dg-bogus "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
> +auto F2 = u8"�"; // { dg-bogus "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
> +auto G2 = u8"�"; // { dg-bogus "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
> +auto H2 = u8"�"; // { dg-bogus "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
> +auto I2 = u8"�"; // { dg-bogus "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
> +auto J2 = u8"���"; // { dg-bogus "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
> +auto K2 = u8"���"; // { dg-bogus "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
> +auto L2 = u8"��"; // { dg-bogus "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
> +auto M2 = u8"��"; // { dg-bogus "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
> +auto N2 = u8"���"; // { dg-bogus "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
> +auto O2 = u8"����"; // { dg-bogus "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
> +auto P2 = u8"����"; // { dg-bogus "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
> +auto Q2 = u8"����"; // { dg-bogus "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
> +auto R2 = u8"������"; // { dg-bogus "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
> + // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
>
>
> Jakub
>
@@ -560,6 +560,13 @@ struct cpp_options
cpp_bidirectional_level. */
unsigned char cpp_warn_bidirectional;
+ /* True if libcpp should warn about invalid UTF-8 characters in comments.
+ 2 if it should be a pedwarn. */
+ unsigned char cpp_warn_invalid_utf8;
+
+ /* True if -finput-charset= option has been used explicitly. */
+ bool cpp_input_charset_explicit;
+
/* Dependency generation. */
struct
{
@@ -666,7 +673,8 @@ enum cpp_warning_reason {
CPP_W_CXX11_COMPAT,
CPP_W_CXX20_COMPAT,
CPP_W_EXPANSION_TO_DEFINED,
- CPP_W_BIDIRECTIONAL
+ CPP_W_BIDIRECTIONAL,
+ CPP_W_INVALID_UTF8
};
/* Callback for header lookup for HEADER, which is the name of a
@@ -227,6 +227,8 @@ cpp_create_reader (enum c_lang lang, cpp
CPP_OPTION (pfile, ext_numeric_literals) = 1;
CPP_OPTION (pfile, warn_date_time) = 0;
CPP_OPTION (pfile, cpp_warn_bidirectional) = bidirectional_unpaired;
+ CPP_OPTION (pfile, cpp_warn_invalid_utf8) = 0;
+ CPP_OPTION (pfile, cpp_input_charset_explicit) = 0;
/* Default CPP arithmetic to something sensible for the host for the
benefit of dumb users like fix-header. */
@@ -50,6 +50,9 @@ static const struct token_spelling token
#define TOKEN_SPELL(token) (token_spellings[(token)->type].category)
#define TOKEN_NAME(token) (token_spellings[(token)->type].name)
+/* ISO 10646 defines the UCS codespace as the range 0-0x10FFFF inclusive. */
+#define UCS_LIMIT 0x10FFFF
+
static void add_line_note (cpp_buffer *, const uchar *, unsigned int);
static int skip_line_comment (cpp_reader *);
static void skip_whitespace (cpp_reader *, cppchar_t);
@@ -1704,6 +1707,116 @@ maybe_warn_bidi_on_char (cpp_reader *pfi
bidi::on_char (kind, ucn_p, loc);
}
+static const cppchar_t utf8_continuation = 0x80;
+static const cppchar_t utf8_signifier = 0xC0;
+
+/* Emit -Winvalid-utf8 warning on invalid UTF-8 character starting
+ at PFILE->buffer->cur. Return a pointer after the diagnosed
+ invalid character. */
+
+static const uchar *
+_cpp_warn_invalid_utf8 (cpp_reader *pfile, bool comment_p)
+{
+ cpp_buffer *buffer = pfile->buffer;
+ const uchar *cur = buffer->cur;
+ bool pedantic = (CPP_PEDANTIC (pfile)
+ && CPP_OPTION (pfile, cpp_warn_invalid_utf8) == 2);
+
+ if (cur[0] < utf8_signifier
+ || cur[1] < utf8_continuation || cur[1] >= utf8_signifier)
+ {
+ if (pedantic)
+ cpp_error_with_line (pfile, CPP_DL_PEDWARN,
+ pfile->line_table->highest_line,
+ CPP_BUF_COL (buffer),
+ comment_p
+ ? N_("invalid UTF-8 character <%x> in comment")
+ : N_("invalid UTF-8 character <%x> in literal"),
+ cur[0]);
+ else
+ cpp_warning_with_line (pfile, CPP_W_INVALID_UTF8,
+ pfile->line_table->highest_line,
+ CPP_BUF_COL (buffer),
+ comment_p
+ ? N_("invalid UTF-8 character <%x> in comment")
+ : N_("invalid UTF-8 character <%x> in literal"),
+ cur[0]);
+ return cur + 1;
+ }
+ else if (cur[2] < utf8_continuation || cur[2] >= utf8_signifier)
+ {
+ if (pedantic)
+ cpp_error_with_line (pfile, CPP_DL_PEDWARN,
+ pfile->line_table->highest_line,
+ CPP_BUF_COL (buffer),
+ comment_p
+ ? N_("invalid UTF-8 character "
+ "<%x><%x> in comment")
+ : N_("invalid UTF-8 character "
+ "<%x><%x> in literal"),
+ cur[0], cur[1]);
+ else
+ cpp_warning_with_line (pfile, CPP_W_INVALID_UTF8,
+ pfile->line_table->highest_line,
+ CPP_BUF_COL (buffer),
+ comment_p
+ ? N_("invalid UTF-8 character "
+ "<%x><%x> in comment")
+ : N_("invalid UTF-8 character "
+ "<%x><%x> in literal"),
+ cur[0], cur[1]);
+ return cur + 2;
+ }
+ else if (cur[3] < utf8_continuation || cur[3] >= utf8_signifier)
+ {
+ if (pedantic)
+ cpp_error_with_line (pfile, CPP_DL_PEDWARN,
+ pfile->line_table->highest_line,
+ CPP_BUF_COL (buffer),
+ comment_p
+ ? N_("invalid UTF-8 character "
+ "<%x><%x><%x> in comment")
+ : N_("invalid UTF-8 character "
+ "<%x><%x><%x> in literal"),
+ cur[0], cur[1], cur[2]);
+ else
+ cpp_warning_with_line (pfile, CPP_W_INVALID_UTF8,
+ pfile->line_table->highest_line,
+ CPP_BUF_COL (buffer),
+ comment_p
+ ? N_("invalid UTF-8 character "
+ "<%x><%x><%x> in comment")
+ : N_("invalid UTF-8 character "
+ "<%x><%x><%x> in literal"),
+ cur[0], cur[1], cur[2]);
+ return cur + 3;
+ }
+ else
+ {
+ if (pedantic)
+ cpp_error_with_line (pfile, CPP_DL_PEDWARN,
+ pfile->line_table->highest_line,
+ CPP_BUF_COL (buffer),
+ comment_p
+ ? "invalid UTF-8 character "
+ "<%x><%x><%x><%x> in comment"
+ : "invalid UTF-8 character "
+ "<%x><%x><%x><%x> in literal",
+ cur[0], cur[1], cur[2], cur[3]);
+ else
+ cpp_warning_with_line (pfile, CPP_W_INVALID_UTF8,
+ pfile->line_table->highest_line,
+ CPP_BUF_COL (buffer),
+ comment_p
+ ? "invalid UTF-8 character "
+ "<%x><%x><%x><%x> in comment"
+ : "invalid UTF-8 character "
+ "<%x><%x><%x><%x> in literal",
+ cur[0], cur[1], cur[2], cur[3]);
+ return cur + 4;
+ }
+}
+
/* Skip a C-style block comment. We find the end of the comment by
seeing if an asterisk is before every '/' we encounter. Returns
nonzero if comment terminated by EOF, zero otherwise.
@@ -1716,6 +1829,8 @@ _cpp_skip_block_comment (cpp_reader *pfi
const uchar *cur = buffer->cur;
uchar c;
const bool warn_bidi_p = pfile->warn_bidi_p ();
+ const bool warn_invalid_utf8_p = CPP_OPTION (pfile, cpp_warn_invalid_utf8);
+ const bool warn_bidi_or_invalid_utf8_p = warn_bidi_p | warn_invalid_utf8_p;
cur++;
if (*cur == '/')
@@ -1765,13 +1880,32 @@ _cpp_skip_block_comment (cpp_reader *pfi
cur = buffer->cur;
}
- /* If this is a beginning of a UTF-8 encoding, it might be
- a bidirectional control character. */
- else if (__builtin_expect (c == bidi::utf8_start, 0) && warn_bidi_p)
- {
- location_t loc;
- bidi::kind kind = get_bidi_utf8 (pfile, cur - 1, &loc);
- maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
+ else if (__builtin_expect (c >= utf8_continuation, 0)
+ && warn_bidi_or_invalid_utf8_p)
+ {
+ /* If this is a beginning of a UTF-8 encoding, it might be
+ a bidirectional control character. */
+ if (c == bidi::utf8_start && warn_bidi_p)
+ {
+ location_t loc;
+ bidi::kind kind = get_bidi_utf8 (pfile, cur - 1, &loc);
+ maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
+ }
+ if (!warn_invalid_utf8_p)
+ continue;
+ if (c >= utf8_signifier)
+ {
+ cppchar_t s;
+ const uchar *pstr = cur - 1;
+ if (_cpp_valid_utf8 (pfile, &pstr, buffer->rlimit, 0, NULL, &s)
+ && s <= UCS_LIMIT)
+ {
+ cur = pstr;
+ continue;
+ }
+ }
+ buffer->cur = cur - 1;
+ cur = _cpp_warn_invalid_utf8 (pfile, true);
}
}
@@ -1789,11 +1923,13 @@ skip_line_comment (cpp_reader *pfile)
cpp_buffer *buffer = pfile->buffer;
location_t orig_line = pfile->line_table->highest_line;
const bool warn_bidi_p = pfile->warn_bidi_p ();
+ const bool warn_invalid_utf8_p = CPP_OPTION (pfile, cpp_warn_invalid_utf8);
+ const bool warn_bidi_or_invalid_utf8_p = warn_bidi_p | warn_invalid_utf8_p;
- if (!warn_bidi_p)
+ if (!warn_bidi_or_invalid_utf8_p)
while (*buffer->cur != '\n')
buffer->cur++;
- else
+ else if (!warn_invalid_utf8_p)
{
while (*buffer->cur != '\n'
&& *buffer->cur != bidi::utf8_start)
@@ -1813,6 +1949,38 @@ skip_line_comment (cpp_reader *pfile)
maybe_warn_bidi_on_close (pfile, buffer->cur);
}
}
+ else
+ {
+ while (*buffer->cur != '\n')
+ {
+ if (*buffer->cur < utf8_continuation)
+ {
+ buffer->cur++;
+ continue;
+ }
+ if (__builtin_expect (*buffer->cur == bidi::utf8_start, 0)
+ && warn_bidi_p)
+ {
+ location_t loc;
+ bidi::kind kind = get_bidi_utf8 (pfile, buffer->cur, &loc);
+ maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
+ }
+ if (*buffer->cur >= utf8_signifier)
+ {
+ cppchar_t s;
+ const uchar *pstr = buffer->cur;
+ if (_cpp_valid_utf8 (pfile, &pstr, buffer->rlimit, 0, NULL, &s)
+ && s <= UCS_LIMIT)
+ {
+ buffer->cur = pstr;
+ continue;
+ }
+ }
+ buffer->cur = _cpp_warn_invalid_utf8 (pfile, true);
+ }
+ if (warn_bidi_p)
+ maybe_warn_bidi_on_close (pfile, buffer->cur);
+ }
_cpp_process_line_notes (pfile, true);
return orig_line != pfile->line_table->highest_line;
@@ -1919,8 +2087,6 @@ warn_about_normalization (cpp_reader *pf
}
}
-static const cppchar_t utf8_signifier = 0xC0;
-
/* Returns TRUE if the sequence starting at buffer->cur is valid in
an identifier. FIRST is TRUE if this starts an identifier. */
@@ -2361,6 +2527,8 @@ lex_raw_string (cpp_reader *pfile, cpp_t
{
const uchar *pos = base;
const bool warn_bidi_p = pfile->warn_bidi_p ();
+ const bool warn_invalid_utf8_p = CPP_OPTION (pfile, cpp_warn_invalid_utf8);
+ const bool warn_bidi_or_invalid_utf8_p = warn_bidi_p | warn_invalid_utf8_p;
/* 'tis a pity this information isn't passed down from the lexer's
initial categorization of the token. */
@@ -2597,12 +2765,31 @@ lex_raw_string (cpp_reader *pfile, cpp_t
pos = base = pfile->buffer->cur;
note = &pfile->buffer->notes[pfile->buffer->cur_note];
}
- else if (__builtin_expect ((unsigned char) c == bidi::utf8_start, 0)
- && warn_bidi_p)
+ else if (__builtin_expect ((unsigned char) c >= utf8_continuation, 0)
+ && warn_bidi_or_invalid_utf8_p)
{
- location_t loc;
- bidi::kind kind = get_bidi_utf8 (pfile, pos - 1, &loc);
- maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
+ if ((unsigned char) c == bidi::utf8_start && warn_bidi_p)
+ {
+ location_t loc;
+ bidi::kind kind = get_bidi_utf8 (pfile, pos - 1, &loc);
+ maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
+ }
+ if (!warn_invalid_utf8_p)
+ continue;
+ if ((unsigned char) c >= utf8_signifier)
+ {
+ cppchar_t s;
+ const uchar *pstr = pos - 1;
+ if (_cpp_valid_utf8 (pfile, &pstr, pfile->buffer->rlimit, 0,
+ NULL, &s)
+ && s <= UCS_LIMIT)
+ {
+ pos = pstr;
+ continue;
+ }
+ }
+ pfile->buffer->cur = pos - 1;
+ pos = _cpp_warn_invalid_utf8 (pfile, false);
}
}
@@ -2704,6 +2891,8 @@ lex_string (cpp_reader *pfile, cpp_token
terminator = '>', type = CPP_HEADER_NAME;
const bool warn_bidi_p = pfile->warn_bidi_p ();
+ const bool warn_invalid_utf8_p = CPP_OPTION (pfile, cpp_warn_invalid_utf8);
+ const bool warn_bidi_or_invalid_utf8_p = warn_bidi_p | warn_invalid_utf8_p;
for (;;)
{
cppchar_t c = *cur++;
@@ -2745,11 +2934,31 @@ lex_string (cpp_reader *pfile, cpp_token
}
else if (c == '\0')
saw_NUL = true;
- else if (__builtin_expect (c == bidi::utf8_start, 0) && warn_bidi_p)
+ else if (__builtin_expect (c >= utf8_continuation, 0)
+ && warn_bidi_or_invalid_utf8_p)
{
- location_t loc;
- bidi::kind kind = get_bidi_utf8 (pfile, cur - 1, &loc);
- maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
+ if (c == bidi::utf8_start && warn_bidi_p)
+ {
+ location_t loc;
+ bidi::kind kind = get_bidi_utf8 (pfile, cur - 1, &loc);
+ maybe_warn_bidi_on_char (pfile, kind, /*ucn_p=*/false, loc);
+ }
+ if (!warn_invalid_utf8_p)
+ continue;
+ if (c >= utf8_signifier)
+ {
+ cppchar_t s;
+ const uchar *pstr = cur - 1;
+ if (_cpp_valid_utf8 (pfile, &pstr, pfile->buffer->rlimit, 0,
+ NULL, &s)
+ && s <= UCS_LIMIT)
+ {
+ cur = pstr;
+ continue;
+ }
+ }
+ pfile->buffer->cur = cur - 1;
+ cur = _cpp_warn_invalid_utf8 (pfile, false);
}
}
@@ -365,9 +365,9 @@ Objective-C and Objective-C++ Dialects}.
-Winfinite-recursion @gol
-Winit-self -Winline -Wno-int-conversion -Wint-in-bool-context @gol
-Wno-int-to-pointer-cast -Wno-invalid-memory-model @gol
--Winvalid-pch -Wjump-misses-init -Wlarger-than=@var{byte-size} @gol
--Wlogical-not-parentheses -Wlogical-op -Wlong-long @gol
--Wno-lto-type-mismatch -Wmain -Wmaybe-uninitialized @gol
+-Winvalid-pch -Winvalid-utf8 -Wjump-misses-init @gol
+-Wlarger-than=@var{byte-size} -Wlogical-not-parentheses -Wlogical-op @gol
+-Wlong-long -Wno-lto-type-mismatch -Wmain -Wmaybe-uninitialized @gol
-Wmemset-elt-size -Wmemset-transposed-args @gol
-Wmisleading-indentation -Wmissing-attributes -Wmissing-braces @gol
-Wmissing-field-initializers -Wmissing-format-attribute @gol
@@ -9569,6 +9569,14 @@ different size.
Warn if a precompiled header (@pxref{Precompiled Headers}) is found in
the search path but cannot be used.
+@item -Winvalid-utf8
+@opindex Winvalid-utf8
+@opindex Wno-invalid-utf8
+Warn if an invalid UTF-8 character is found inside of a comment or
+character or string literals.
+This warning is on by default for C++23 if @option{-finput-charset=UTF-8}
+is used and turned into error with @option{-pedantic-errors}.
+
@item -Wlong-long
@opindex Wlong-long
@opindex Wno-long-long
@@ -821,6 +821,10 @@ Winvalid-pch
C ObjC C++ ObjC++ CPP(warn_invalid_pch) CppReason(CPP_W_INVALID_PCH) Var(cpp_warn_invalid_pch) Init(0) Warning
Warn about PCH files that are found but not used.
+Winvalid-utf8
+C objC C++ ObjC++ CPP(cpp_warn_invalid_utf8) CppReason(CPP_W_INVALID_UTF8) Var(warn_invalid_utf8) Init(0) Warning
+Warn about invalid UTF-8 characters in comments.
+
Wjump-misses-init
C ObjC Var(warn_jump_misses_init) Warning LangEnabledby(C ObjC,Wc++-compat)
Warn when a jump misses a variable initialization.
@@ -534,6 +534,7 @@ c_common_handle_option (size_t scode, co
case OPT_finput_charset_:
cpp_opts->input_charset = arg;
+ cpp_opts->cpp_input_charset_explicit = 1;
break;
case OPT_ftemplate_depth_:
@@ -1152,6 +1153,17 @@ c_common_post_options (const char **pfil
lang_hooks.preprocess_options (parse_in);
cpp_post_options (parse_in);
init_global_opts_from_cpp (&global_options, cpp_get_options (parse_in));
+ /* For C++23 and explicit -finput-charset=UTF-8, turn on -Winvalid-utf8
+ by default and make it a pedwarn unless -Wno-invalid-utf8. */
+ if (cxx_dialect >= cxx23
+ && cpp_opts->cpp_input_charset_explicit
+ && strcmp (cpp_opts->input_charset, "UTF-8") == 0
+ && (cpp_opts->cpp_warn_invalid_utf8
+ || !global_options_set.x_warn_invalid_utf8))
+ {
+ global_options.x_warn_invalid_utf8 = 1;
+ cpp_opts->cpp_warn_invalid_utf8 = cpp_opts->cpp_pedantic ? 2 : 1;
+ }
/* Let diagnostics infrastructure know how to convert input files the same
way libcpp will do it, namely using the configured input charset and
@@ -0,0 +1,43 @@
+// P2295R6 - Support for UTF-8 as a portable source file encoding
+// This test intentionally contains various byte sequences which are not valid UTF-8
+// { dg-do preprocess }
+// { dg-options "-finput-charset=UTF-8 -Winvalid-utf8" }
+
+// a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" }
+// a�a { dg-warning "invalid UTF-8 character <80> in comment" }
+// a�a { dg-warning "invalid UTF-8 character <bf> in comment" }
+// a�a { dg-warning "invalid UTF-8 character <c0> in comment" }
+// a�a { dg-warning "invalid UTF-8 character <c1> in comment" }
+// a�a { dg-warning "invalid UTF-8 character <f5> in comment" }
+// a�a { dg-warning "invalid UTF-8 character <ff> in comment" }
+// a�a { dg-warning "invalid UTF-8 character <c2> in comment" }
+// a�a { dg-warning "invalid UTF-8 character <e0> in comment" }
+// a���a { dg-warning "invalid UTF-8 character <e0><80><bf> in comment" }
+// a���a { dg-warning "invalid UTF-8 character <e0><9f><80> in comment" }
+// a��a { dg-warning "invalid UTF-8 character <e0><bf> in comment" }
+// a��a { dg-warning "invalid UTF-8 character <ec><80> in comment" }
+// a���a { dg-warning "invalid UTF-8 character <ed><a0><80> in comment" }
+// a����a { dg-warning "invalid UTF-8 character <f0><80><80><80> in comment" }
+// a����a { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in comment" }
+// a����a { dg-warning "invalid UTF-8 character <f4><90><80><80> in comment" }
+// a������a { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in comment" }
+// { dg-warning "invalid UTF-8 character <bf> in comment" "" { target *-*-* } .-1 }
+/* a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" } */
+/* a�a { dg-warning "invalid UTF-8 character <80> in comment" } */
+/* a�a { dg-warning "invalid UTF-8 character <bf> in comment" } */
+/* a�a { dg-warning "invalid UTF-8 character <c0> in comment" } */
+/* a�a { dg-warning "invalid UTF-8 character <c1> in comment" } */
+/* a�a { dg-warning "invalid UTF-8 character <f5> in comment" } */
+/* a�a { dg-warning "invalid UTF-8 character <ff> in comment" } */
+/* a�a { dg-warning "invalid UTF-8 character <c2> in comment" } */
+/* a�a { dg-warning "invalid UTF-8 character <e0> in comment" } */
+/* a���a { dg-warning "invalid UTF-8 character <e0><80><bf> in comment" } */
+/* a���a { dg-warning "invalid UTF-8 character <e0><9f><80> in comment" } */
+/* a��a { dg-warning "invalid UTF-8 character <e0><bf> in comment" } */
+/* a��a { dg-warning "invalid UTF-8 character <ec><80> in comment" } */
+/* a���a { dg-warning "invalid UTF-8 character <ed><a0><80> in comment" } */
+/* a����a { dg-warning "invalid UTF-8 character <f0><80><80><80> in comment" } */
+/* a����a { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in comment" } */
+/* a����a { dg-warning "invalid UTF-8 character <f4><90><80><80> in comment" } */
+/* a������a { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in comment" } */
+/* { dg-warning "invalid UTF-8 character <bf> in comment" "" { target *-*-* } .-1 } */
@@ -0,0 +1,88 @@
+// P2295R6 - Support for UTF-8 as a portable source file encoding
+// This test intentionally contains various byte sequences which are not valid UTF-8
+// { dg-do preprocess { target { c || c++11 } } }
+// { dg-require-effective-target wchar }
+// { dg-options "-finput-charset=UTF-8 -Winvalid-utf8" }
+// { dg-additional-options "-std=gnu99" { target c } }
+
+#ifndef __cplusplus
+#include <wchar.h>
+typedef __CHAR16_TYPE__ char16_t;
+typedef __CHAR32_TYPE__ char32_t;
+#endif
+
+char32_t a = U'�'; // { dg-warning "invalid UTF-8 character <80> in literal" }
+char32_t b = U'�'; // { dg-warning "invalid UTF-8 character <bf> in literal" }
+char32_t c = U'�'; // { dg-warning "invalid UTF-8 character <c0> in literal" }
+char32_t d = U'�'; // { dg-warning "invalid UTF-8 character <c1> in literal" }
+char32_t e = U'�'; // { dg-warning "invalid UTF-8 character <f5> in literal" }
+char32_t f = U'�'; // { dg-warning "invalid UTF-8 character <ff> in literal" }
+char32_t g = U'�'; // { dg-warning "invalid UTF-8 character <c2> in literal" }
+char32_t h = U'�'; // { dg-warning "invalid UTF-8 character <e0> in literal" }
+char32_t i = U'���'; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" }
+char32_t j = U'���'; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" }
+char32_t k = U'��'; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" }
+char32_t l = U'��'; // { dg-warning "invalid UTF-8 character <ec><80> in literal" }
+char32_t m = U'���'; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" }
+char32_t n = U'����'; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" }
+char32_t o = U'����'; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" }
+char32_t p = U'����'; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" }
+char32_t q = U'������'; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" }
+ // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target *-*-* } .-1 }
+const char32_t *A = U"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
+const char32_t *B = U"�"; // { dg-warning "invalid UTF-8 character <80> in literal" }
+const char32_t *C = U"�"; // { dg-warning "invalid UTF-8 character <bf> in literal" }
+const char32_t *D = U"�"; // { dg-warning "invalid UTF-8 character <c0> in literal" }
+const char32_t *E = U"�"; // { dg-warning "invalid UTF-8 character <c1> in literal" }
+const char32_t *F = U"�"; // { dg-warning "invalid UTF-8 character <f5> in literal" }
+const char32_t *G = U"�"; // { dg-warning "invalid UTF-8 character <ff> in literal" }
+const char32_t *H = U"�"; // { dg-warning "invalid UTF-8 character <c2> in literal" }
+const char32_t *I = U"�"; // { dg-warning "invalid UTF-8 character <e0> in literal" }
+const char32_t *J = U"���"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" }
+const char32_t *K = U"���"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" }
+const char32_t *L = U"��"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" }
+const char32_t *M = U"��"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" }
+const char32_t *N = U"���"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" }
+const char32_t *O = U"����"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" }
+const char32_t *P = U"����"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" }
+const char32_t *Q = U"����"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" }
+const char32_t *R = U"������"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" }
+ // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target *-*-* } .-1 }
+const char32_t *A1 = UR"(߿ࠀ𐀀)"; // { dg-bogus "invalid UTF-8 character" }
+const char32_t *B1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <80> in literal" }
+const char32_t *C1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <bf> in literal" }
+const char32_t *D1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c0> in literal" }
+const char32_t *E1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c1> in literal" }
+const char32_t *F1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <f5> in literal" }
+const char32_t *G1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <ff> in literal" }
+const char32_t *H1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c2> in literal" }
+const char32_t *I1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <e0> in literal" }
+const char32_t *J1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" }
+const char32_t *K1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" }
+const char32_t *L1 = UR"(��)"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" }
+const char32_t *M1 = UR"(��)"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" }
+const char32_t *N1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" }
+const char32_t *O1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" }
+const char32_t *P1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" }
+const char32_t *Q1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" }
+const char32_t *R1 = UR"(������)"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" }
+ // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target *-*-* } .-1 }
+const char *A2 = u8"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
+const char *B2 = u8"�"; // { dg-warning "invalid UTF-8 character <80> in literal" }
+const char *C2 = u8"�"; // { dg-warning "invalid UTF-8 character <bf> in literal" }
+const char *D2 = u8"�"; // { dg-warning "invalid UTF-8 character <c0> in literal" }
+const char *E2 = u8"�"; // { dg-warning "invalid UTF-8 character <c1> in literal" }
+const char *F2 = u8"�"; // { dg-warning "invalid UTF-8 character <f5> in literal" }
+const char *G2 = u8"�"; // { dg-warning "invalid UTF-8 character <ff> in literal" }
+const char *H2 = u8"�"; // { dg-warning "invalid UTF-8 character <c2> in literal" }
+const char *I2 = u8"�"; // { dg-warning "invalid UTF-8 character <e0> in literal" }
+const char *J2 = u8"���"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" }
+const char *K2 = u8"���"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" }
+const char *L2 = u8"��"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" }
+const char *M2 = u8"��"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" }
+const char *N2 = u8"���"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" }
+const char *O2 = u8"���?"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" }
+const char *P2 = u8"����"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" }
+const char *Q2 = u8"����"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" }
+const char *R2 = u8"������"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" }
+ // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target *-*-* } .-1 }
@@ -0,0 +1,43 @@
+// P2295R6 - Support for UTF-8 as a portable source file encoding
+// This test intentionally contains various byte sequences which are not valid UTF-8
+// { dg-do preprocess }
+// { dg-options "-finput-charset=UTF-8" }
+
+// a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" }
+// a�a { dg-warning "invalid UTF-8 character <80> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <c0> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <c1> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <f5> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <ff> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <c2> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <e0> in comment" "" { target c++23 } }
+// a���a { dg-warning "invalid UTF-8 character <e0><80><bf> in comment" "" { target c++23 } }
+// a���a { dg-warning "invalid UTF-8 character <e0><9f><80> in comment" "" { target c++23 } }
+// a��a { dg-warning "invalid UTF-8 character <e0><bf> in comment" "" { target c++23 } }
+// a��a { dg-warning "invalid UTF-8 character <ec><80> in comment" "" { target c++23 } }
+// a?��a { dg-warning "invalid UTF-8 character <ed><a0><80> in comment" "" { target c++23 } }
+// a����a { dg-warning "invalid UTF-8 character <f0><80><80><80> in comment" "" { target c++23 } }
+// a����a { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in comment" "" { target c++23 } }
+// a����a { dg-warning "invalid UTF-8 character <f4><90><80><80> in comment" "" { target c++23 } }
+// a������a { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in comment" "" { target c++23 } }
+// { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } .-1 }
+/* a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" } */
+/* a�a { dg-warning "invalid UTF-8 character <80> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <c0> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <c1> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <f5> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <ff> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <c2> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <e0> in comment" "" { target c++23 } } */
+/* a���a { dg-warning "invalid UTF-8 character <e0><80><bf> in comment" "" { target c++23 } } */
+/* a���a { dg-warning "invalid UTF-8 character <e0><9f><80> in comment" "" { target c++23 } } */
+/* a��a { dg-warning "invalid UTF-8 character <e0><bf> in comment" "" { target c++23 } } */
+/* a��a { dg-warning "invalid UTF-8 character <ec><80> in comment" "" { target c++23 } } */
+/* a���a { dg-warning "invalid UTF-8 character <ed><a0><80> in comment" "" { target c++23 } } */
+/* a����a { dg-warning "invalid UTF-8 character <f0><80><80><80> in comment" "" { target c++23 } } */
+/* a����a { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in comment" "" { target c++23 } } */
+/* a����a { dg-warning "invalid UTF-8 character <f4><90><80><80> in comment" "" { target c++23 } } */
+/* a������a { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in comment" "" { target c++23 } } */
+/* { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } .-1 } */
@@ -0,0 +1,43 @@
+// P2295R6 - Support for UTF-8 as a portable source file encoding
+// This test intentionally contains various byte sequences which are not valid UTF-8
+// { dg-do preprocess }
+// { dg-options "-finput-charset=UTF-8 -pedantic" }
+
+// a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" }
+// a�a { dg-warning "invalid UTF-8 character <80> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <c0> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <c1> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <f5> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <ff> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <c2> in comment" "" { target c++23 } }
+// a�a { dg-warning "invalid UTF-8 character <e0> in comment" "" { target c++23 } }
+// a���a { dg-warning "invalid UTF-8 character <e0><80><bf> in comment" "" { target c++23 } }
+// a���a { dg-warning "invalid UTF-8 character <e0><9f><80> in comment" "" { target c++23 } }
+// a��a { dg-warning "invalid UTF-8 character <e0><bf> in comment" "" { target c++23 } }
+// a��a { dg-warning "invalid UTF-8 character <ec><80> in comment" "" { target c++23 } }
+// a���a { dg-warning "invalid UTF-8 character <ed><a0><80> in comment" "" { target c++23 } }
+// a����a { dg-warning "invalid UTF-8 character <f0><80><80><80> in comment" "" { target c++23 } }
+// a����a { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in comment" "" { target c++23 } }
+// a����a { dg-warning "invalid UTF-8 character <f4><90><80><80> in comment" "" { target c++23 } }
+// a������a { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in comment" "" { target c++23 } }
+// { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } .-1 }
+/* a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" } */
+/* a�a { dg-warning "invalid UTF-8 character <80> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <c0> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <c1> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <f5> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <ff> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <c2> in comment" "" { target c++23 } } */
+/* a�a { dg-warning "invalid UTF-8 character <e0> in comment" "" { target c++23 } } */
+/* a���a { dg-warning "invalid UTF-8 character <e0><80><bf> in comment" "" { target c++23 } } */
+/* a���a { dg-warning "invalid UTF-8 character <e0><9f><80> in comment" "" { target c++23 } } */
+/* a��a { dg-warning "invalid UTF-8 character <e0><bf> in comment" "" { target c++23 } } */
+/* a��a { dg-warning "invalid UTF-8 character <ec><80> in comment" "" { target c++23 } } */
+/* a���a { dg-warning "invalid UTF-8 character <ed><a0><80> in comment" "" { target c++23 } } */
+/* a����a { dg-warning "invalid UTF-8 character <f0><80><80><80> in comment" "" { target c++23 } } */
+/* a����a { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in comment" "" { target c++23 } } */
+/* a����a { dg-warning "invalid UTF-8 character <f4><90><80><80> in comment" "" { target c++23 } } */
+/* a������a { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in comment" "" { target c++23 } } */
+/* { dg-warning "invalid UTF-8 character <bf> in comment" "" { target c++23 } .-1 } */
@@ -0,0 +1,43 @@
+// P2295R6 - Support for UTF-8 as a portable source file encoding
+// This test intentionally contains various byte sequences which are not valid UTF-8
+// { dg-do preprocess }
+// { dg-options "-finput-charset=UTF-8 -pedantic-errors" }
+
+// a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" }
+// a�a { dg-error "invalid UTF-8 character <80> in comment" "" { target c++23 } }
+// a�a { dg-error "invalid UTF-8 character <bf> in comment" "" { target c++23 } }
+// a�a { dg-error "invalid UTF-8 character <c0> in comment" "" { target c++23 } }
+// a�a { dg-error "invalid UTF-8 character <c1> in comment" "" { target c++23 } }
+// a�a { dg-error "invalid UTF-8 character <f5> in comment" "" { target c++23 } }
+// a�a { dg-error "invalid UTF-8 character <ff> in comment" "" { target c++23 } }
+// a�a { dg-error "invalid UTF-8 character <c2> in comment" "" { target c++23 } }
+// a�a { dg-error "invalid UTF-8 character <e0> in comment" "" { target c++23 } }
+// a���a { dg-error "invalid UTF-8 character <e0><80><bf> in comment" "" { target c++23 } }
+// a���a { dg-error "invalid UTF-8 character <e0><9f><80> in comment" "" { target c++23 } }
+// a��a { dg-error "invalid UTF-8 character <e0><bf> in comment" "" { target c++23 } }
+// a��a { dg-error "invalid UTF-8 character <ec><80> in comment" "" { target c++23 } }
+// a���a { dg-error "invalid UTF-8 character <ed><a0><80> in comment" "" { target c++23 } }
+// a����a { dg-error "invalid UTF-8 character <f0><80><80><80> in comment" "" { target c++23 } }
+// a����a { dg-error "invalid UTF-8 character <f0><8f><bf><bf> in comment" "" { target c++23 } }
+// a����a { dg-error "invalid UTF-8 character <f4><90><80><80> in comment" "" { target c++23 } }
+// a������a { dg-error "invalid UTF-8 character <fd><bf><bf><bf> in comment" "" { target c++23 } }
+// { dg-error "invalid UTF-8 character <bf> in comment" "" { target c++23 } .-1 }
+/* a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" } */
+/* a�a { dg-error "invalid UTF-8 character <80> in comment" "" { target c++23 } } */
+/* a�a { dg-error "invalid UTF-8 character <bf> in comment" "" { target c++23 } } */
+/* a�a { dg-error "invalid UTF-8 character <c0> in comment" "" { target c++23 } } */
+/* a�a { dg-error "invalid UTF-8 character <c1> in comment" "" { target c++23 } } */
+/* a�a { dg-error "invalid UTF-8 character <f5> in comment" "" { target c++23 } } */
+/* a�a { dg-error "invalid UTF-8 character <ff> in comment" "" { target c++23 } } */
+/* a�a { dg-error "invalid UTF-8 character <c2> in comment" "" { target c++23 } } */
+/* a�a { dg-error "invalid UTF-8 character <e0> in comment" "" { target c++23 } } */
+/* a���a { dg-error "invalid UTF-8 character <e0><80><bf> in comment" "" { target c++23 } } */
+/* a���a { dg-error "invalid UTF-8 character <e0><9f><80> in comment" "" { target c++23 } } */
+/* a��a { dg-error "invalid UTF-8 character <e0><bf> in comment" "" { target c++23 } } */
+/* a��a { dg-error "invalid UTF-8 character <ec><80> in comment" "" { target c++23 } } */
+/* a���a { dg-error "invalid UTF-8 character <ed><a0><80> in comment" "" { target c++23 } } */
+/* a����a { dg-error "invalid UTF-8 character <f0><80><80><80> in comment" "" { target c++23 } } */
+/* a����a { dg-error "invalid UTF-8 character <f0><8f><bf><bf> in comment" "" { target c++23 } } */
+/* a����a { dg-error "invalid UTF-8 character <f4><90><80><80> in comment" "" { target c++23 } } */
+/* a������a { dg-error "invalid UTF-8 character <fd><bf><bf><bf> in comment" "" { target c++23 } } */
+/* { dg-error "invalid UTF-8 character <bf> in comment" "" { target c++23 } .-1 } */
@@ -0,0 +1,43 @@
+// P2295R6 - Support for UTF-8 as a portable source file encoding
+// This test intentionally contains various byte sequences which are not valid UTF-8
+// { dg-do preprocess }
+// { dg-options "-finput-charset=UTF-8 -pedantic-errors -Wno-invalid-utf8" }
+
+// a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" }
+// a�a { dg-bogus "invalid UTF-8 character <80> in comment" }
+// a�a { dg-bogus "invalid UTF-8 character <bf> in comment" }
+// a�a { dg-bogus "invalid UTF-8 character <c0> in comment" }
+// a�a { dg-bogus "invalid UTF-8 character <c1> in comment" }
+// a�a { dg-bogus "invalid UTF-8 character <f5> in comment" }
+// a�a { dg-bogus "invalid UTF-8 character <ff> in comment" }
+// a�a { dg-bogus "invalid UTF-8 character <c2> in comment" }
+// a�a { dg-bogus "invalid UTF-8 character <e0> in comment" }
+// a���a { dg-bogus "invalid UTF-8 character <e0><80><bf> in comment" }
+// a���a { dg-bogus "invalid UTF-8 character <e0><9f><80> in comment" }
+// a��a { dg-bogus "invalid UTF-8 character <e0><bf> in comment" }
+// a��a { dg-bogus "invalid UTF-8 character <ec><80> in comment" }
+// a���a { dg-bogus "invalid UTF-8 character <ed><a0><80> in comment" }
+// a����a { dg-bogus "invalid UTF-8 character <f0><80><80><80> in comment" }
+// a����a { dg-bogus "invalid UTF-8 character <f0><8f><bf><bf> in comment" }
+// a����a { dg-bogus "invalid UTF-8 character <f4><90><80><80> in comment" }
+// a������a { dg-bogus "invalid UTF-8 character <fd><bf><bf><bf> in comment" }
+// { dg-bogus "invalid UTF-8 character <bf> in comment" "" { target *-*-* } .-1 }
+/* a߿ࠀ𐀀a { dg-bogus "invalid UTF-8 character" } */
+/* a�a { dg-bogus "invalid UTF-8 character <80> in comment" } */
+/* a�a { dg-bogus "invalid UTF-8 character <bf> in comment" } */
+/* a�a { dg-bogus "invalid UTF-8 character <c0> in comment" } */
+/* a�a { dg-bogus "invalid UTF-8 character <c1> in comment" } */
+/* a�a { dg-bogus "invalid UTF-8 character <f5> in comment" } */
+/* a�a { dg-bogus "invalid UTF-8 character <ff> in comment" } */
+/* a�a { dg-bogus "invalid UTF-8 character <c2> in comment" } */
+/* a�a { dg-bogus "invalid UTF-8 character <e0> in comment" } */
+/* a���a { dg-bogus "invalid UTF-8 character <e0><80><bf> in comment" } */
+/* a���a { dg-bogus "invalid UTF-8 character <e0><9f><80> in comment" } */
+/* a��a { dg-bogus "invalid UTF-8 character <e0><bf> in comment" } */
+/* a��a { dg-bogus "invalid UTF-8 character <ec><80> in comment" } */
+/* a���a { dg-bogus "invalid UTF-8 character <ed><a0><80> in comment" } */
+/* a����a { dg-bogus "invalid UTF-8 character <f0><80><80><80> in comment" } */
+/* a����a { dg-bogus "invalid UTF-8 character <f0><8f><bf><bf> in comment" } */
+/* a����a { dg-bogus "invalid UTF-8 character <f4><90><80><80> in comment" } */
+/* a������a { dg-bogus "invalid UTF-8 character <fd><bf><bf><bf> in comment" } */
+/* { dg-bogus "invalid UTF-8 character <bf> in comment" "" { target *-*-* } .-1 } */
@@ -0,0 +1,80 @@
+// P2295R6 - Support for UTF-8 as a portable source file encoding
+// This test intentionally contains various byte sequences which are not valid UTF-8
+// { dg-do preprocess { target c++11 } }
+// { dg-options "-finput-charset=UTF-8" }
+
+char32_t a = U'�'; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+char32_t b = U'�'; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+char32_t c = U'�'; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+char32_t d = U'�'; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+char32_t e = U'�'; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+char32_t f = U'�'; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+char32_t g = U'�'; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+char32_t h = U'�'; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+char32_t i = U'���'; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+char32_t j = U'���'; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+char32_t k = U'��'; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+char32_t l = U'��'; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+char32_t m = U'���'; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+char32_t n = U'����'; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+char32_t o = U'����'; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+char32_t p = U'����'; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+char32_t q = U'������'; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
+auto A = U"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
+auto B = U"�"; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+auto C = U"�"; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+auto D = U"�"; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+auto E = U"�"; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+auto F = U"�"; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+auto G = U"�"; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+auto H = U"�"; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+auto I = U"�"; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+auto J = U"���"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+auto K = U"���"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+auto L = U"��"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+auto M = U"��"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+auto N = U"���"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+auto O = U"����"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+auto P = U"����"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+auto Q = U"����"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+auto R = U"������"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
+auto A1 = UR"(߿ࠀ𐀀)"; // { dg-bogus "invalid UTF-8 character" }
+auto B1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+auto C1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+auto D1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+auto E1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+auto F1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+auto G1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+auto H1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+auto I1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+auto J1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+auto K1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+auto L1 = UR"(��)"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+auto M1 = UR"(��)"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+auto N1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+auto O1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+auto P1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+auto Q1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+auto R1 = UR"(������)"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
+auto A2 = u8"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
+auto B2 = u8"�"; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+auto C2 = u8"�"; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+auto D2 = u8"�"; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+auto E2 = u8"�"; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+auto F2 = u8"�"; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+auto G2 = u8"�"; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+auto H2 = u8"�"; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+auto I2 = u8"�"; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+auto J2 = u8"���"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+auto K2 = u8"���"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+auto L2 = u8"��"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+auto M2 = u8"��"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+auto N2 = u8"���"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+auto O2 = u8"����"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+auto P2 = u8"����"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+auto Q2 = u8"����"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+auto R2 = u8"������"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
@@ -0,0 +1,80 @@
+// P2295R6 - Support for UTF-8 as a portable source file encoding
+// This test intentionally contains various byte sequences which are not valid UTF-8
+// { dg-do preprocess { target c++11 } }
+// { dg-options "-finput-charset=UTF-8 -pedantic" }
+
+char32_t a = U'�'; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+char32_t b = U'�'; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+char32_t c = U'�'; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+char32_t d = U'�'; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+char32_t e = U'�'; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+char32_t f = U'�'; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+char32_t g = U'�'; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+char32_t h = U'�'; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+char32_t i = U'���'; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+char32_t j = U'���'; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+char32_t k = U'��'; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+char32_t l = U'��'; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+char32_t m = U'���'; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+char32_t n = U'����'; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+char32_t o = U'����'; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+char32_t p = U'����'; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+char32_t q = U'������'; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
+auto A = U"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
+auto B = U"�"; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+auto C = U"�"; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+auto D = U"�"; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+auto E = U"�"; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+auto F = U"�"; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+auto G = U"�"; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+auto H = U"�"; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+auto I = U"�"; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+auto J = U"���"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+auto K = U"���"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+auto L = U"��"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+auto M = U"��"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+auto N = U"���"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+auto O = U"����"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+auto P = U"����"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+auto Q = U"����"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+auto R = U"������"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
+auto A1 = UR"(߿ࠀ𐀀)"; // { dg-bogus "invalid UTF-8 character" }
+auto B1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+auto C1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+auto D1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+auto E1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+auto F1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+auto G1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+auto H1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+auto I1 = UR"(�)"; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+auto J1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+auto K1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+auto L1 = UR"(��)"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+auto M1 = UR"(��)"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+auto N1 = UR"(���)"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+auto O1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+auto P1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+auto Q1 = UR"(����)"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+auto R1 = UR"(������)"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
+auto A2 = u8"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
+auto B2 = u8"�"; // { dg-warning "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+auto C2 = u8"�"; // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+auto D2 = u8"�"; // { dg-warning "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+auto E2 = u8"�"; // { dg-warning "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+auto F2 = u8"�"; // { dg-warning "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+auto G2 = u8"�"; // { dg-warning "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+auto H2 = u8"�"; // { dg-warning "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+auto I2 = u8"�"; // { dg-warning "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+auto J2 = u8"���"; // { dg-warning "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+auto K2 = u8"���"; // { dg-warning "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+auto L2 = u8"��"; // { dg-warning "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+auto M2 = u8"��"; // { dg-warning "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+auto N2 = u8"���"; // { dg-warning "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+auto O2 = u8"����"; // { dg-warning "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+auto P2 = u8"����"; // { dg-warning "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+auto Q2 = u8"����"; // { dg-warning "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+auto R2 = u8"������"; // { dg-warning "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-warning "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
@@ -0,0 +1,80 @@
+// P2295R6 - Support for UTF-8 as a portable source file encoding
+// This test intentionally contains various byte sequences which are not valid UTF-8
+// { dg-do preprocess { target c++11 } }
+// { dg-options "-finput-charset=UTF-8 -pedantic-errors" }
+
+char32_t a = U'�'; // { dg-error "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+char32_t b = U'�'; // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+char32_t c = U'�'; // { dg-error "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+char32_t d = U'�'; // { dg-error "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+char32_t e = U'�'; // { dg-error "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+char32_t f = U'�'; // { dg-error "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+char32_t g = U'�'; // { dg-error "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+char32_t h = U'�'; // { dg-error "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+char32_t i = U'���'; // { dg-error "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+char32_t j = U'���'; // { dg-error "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+char32_t k = U'��'; // { dg-error "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+char32_t l = U'��'; // { dg-error "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+char32_t m = U'���'; // { dg-error "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+char32_t n = U'����'; // { dg-error "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+char32_t o = U'����'; // { dg-error "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+char32_t p = U'����'; // { dg-error "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+char32_t q = U'������'; // { dg-error "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
+auto A = U"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
+auto B = U"�"; // { dg-error "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+auto C = U"�"; // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+auto D = U"�"; // { dg-error "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+auto E = U"�"; // { dg-error "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+auto F = U"�"; // { dg-error "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+auto G = U"�"; // { dg-error "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+auto H = U"�"; // { dg-error "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+auto I = U"�"; // { dg-error "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+auto J = U"���"; // { dg-error "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+auto K = U"���"; // { dg-error "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+auto L = U"��"; // { dg-error "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+auto M = U"��"; // { dg-error "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+auto N = U"���"; // { dg-error "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+auto O = U"����"; // { dg-error "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+auto P = U"����"; // { dg-error "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+auto Q = U"����"; // { dg-error "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+auto R = U"������"; // { dg-error "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
+auto A1 = UR"(߿ࠀ𐀀)"; // { dg-bogus "invalid UTF-8 character" }
+auto B1 = UR"(�)"; // { dg-error "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+auto C1 = UR"(�)"; // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+auto D1 = UR"(�)"; // { dg-error "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+auto E1 = UR"(�)"; // { dg-error "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+auto F1 = UR"(�)"; // { dg-error "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+auto G1 = UR"(�)"; // { dg-error "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+auto H1 = UR"(�)"; // { dg-error "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+auto I1 = UR"(�)"; // { dg-error "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+auto J1 = UR"(���)"; // { dg-error "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+auto K1 = UR"(���)"; // { dg-error "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+auto L1 = UR"(��)"; // { dg-error "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+auto M1 = UR"(��)"; // { dg-error "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+auto N1 = UR"(���)"; // { dg-error "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+auto O1 = UR"(����)"; // { dg-error "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+auto P1 = UR"(����)"; // { dg-error "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+auto Q1 = UR"(����)"; // { dg-error "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+auto R1 = UR"(������)"; // { dg-error "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
+auto A2 = u8"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
+auto B2 = u8"�"; // { dg-error "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+auto C2 = u8"�"; // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+auto D2 = u8"�"; // { dg-error "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+auto E2 = u8"�"; // { dg-error "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+auto F2 = u8"�"; // { dg-error "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+auto G2 = u8"�"; // { dg-error "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+auto H2 = u8"�"; // { dg-error "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+auto I2 = u8"�"; // { dg-error "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+auto J2 = u8"���"; // { dg-error "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+auto K2 = u8"���"; // { dg-error "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+auto L2 = u8"��"; // { dg-error "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+auto M2 = u8"��"; // { dg-error "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+auto N2 = u8"���"; // { dg-error "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+auto O2 = u8"����"; // { dg-error "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+auto P2 = u8"����"; // { dg-error "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+auto Q2 = u8"����"; // { dg-error "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+auto R2 = u8"������"; // { dg-error "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-error "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
@@ -0,0 +1,80 @@
+// P2295R6 - Support for UTF-8 as a portable source file encoding
+// This test intentionally contains various byte sequences which are not valid UTF-8
+// { dg-do preprocess { target c++11 } }
+// { dg-options "-finput-charset=UTF-8 -pedantic-errors -Wno-invalid-utf8" }
+
+char32_t a = U'�'; // { dg-bogus "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+char32_t b = U'�'; // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+char32_t c = U'�'; // { dg-bogus "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+char32_t d = U'�'; // { dg-bogus "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+char32_t e = U'�'; // { dg-bogus "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+char32_t f = U'�'; // { dg-bogus "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+char32_t g = U'�'; // { dg-bogus "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+char32_t h = U'�'; // { dg-bogus "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+char32_t i = U'���'; // { dg-bogus "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+char32_t j = U'���'; // { dg-bogus "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+char32_t k = U'��'; // { dg-bogus "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+char32_t l = U'��'; // { dg-bogus "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+char32_t m = U'���'; // { dg-bogus "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+char32_t n = U'����'; // { dg-bogus "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+char32_t o = U'����'; // { dg-bogus "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+char32_t p = U'����'; // { dg-bogus "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+char32_t q = U'������'; // { dg-bogus "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
+auto A = U"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
+auto B = U"�"; // { dg-bogus "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+auto C = U"�"; // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+auto D = U"�"; // { dg-bogus "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+auto E = U"�"; // { dg-bogus "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+auto F = U"�"; // { dg-bogus "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+auto G = U"�"; // { dg-bogus "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+auto H = U"�"; // { dg-bogus "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+auto I = U"�"; // { dg-bogus "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+auto J = U"���"; // { dg-bogus "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+auto K = U"���"; // { dg-bogus "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+auto L = U"��"; // { dg-bogus "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+auto M = U"��"; // { dg-bogus "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+auto N = U"���"; // { dg-bogus "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+auto O = U"����"; // { dg-bogus "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+auto P = U"����"; // { dg-bogus "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+auto Q = U"����"; // { dg-bogus "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+auto R = U"������"; // { dg-bogus "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
+auto A1 = UR"(߿ࠀ𐀀)"; // { dg-bogus "invalid UTF-8 character" }
+auto B1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+auto C1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+auto D1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+auto E1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+auto F1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+auto G1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+auto H1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+auto I1 = UR"(�)"; // { dg-bogus "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+auto J1 = UR"(���)"; // { dg-bogus "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+auto K1 = UR"(���)"; // { dg-bogus "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+auto L1 = UR"(��)"; // { dg-bogus "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+auto M1 = UR"(��)"; // { dg-bogus "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+auto N1 = UR"(���)"; // { dg-bogus "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+auto O1 = UR"(����)"; // { dg-bogus "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+auto P1 = UR"(����)"; // { dg-bogus "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+auto Q1 = UR"(����)"; // { dg-bogus "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+auto R1 = UR"(������)"; // { dg-bogus "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }
+auto A2 = u8"߿ࠀ𐀀"; // { dg-bogus "invalid UTF-8 character" }
+auto B2 = u8"�"; // { dg-bogus "invalid UTF-8 character <80> in literal" "" { target c++23 } }
+auto C2 = u8"�"; // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } }
+auto D2 = u8"�"; // { dg-bogus "invalid UTF-8 character <c0> in literal" "" { target c++23 } }
+auto E2 = u8"�"; // { dg-bogus "invalid UTF-8 character <c1> in literal" "" { target c++23 } }
+auto F2 = u8"�"; // { dg-bogus "invalid UTF-8 character <f5> in literal" "" { target c++23 } }
+auto G2 = u8"�"; // { dg-bogus "invalid UTF-8 character <ff> in literal" "" { target c++23 } }
+auto H2 = u8"�"; // { dg-bogus "invalid UTF-8 character <c2> in literal" "" { target c++23 } }
+auto I2 = u8"�"; // { dg-bogus "invalid UTF-8 character <e0> in literal" "" { target c++23 } }
+auto J2 = u8"���"; // { dg-bogus "invalid UTF-8 character <e0><80><bf> in literal" "" { target c++23 } }
+auto K2 = u8"���"; // { dg-bogus "invalid UTF-8 character <e0><9f><80> in literal" "" { target c++23 } }
+auto L2 = u8"��"; // { dg-bogus "invalid UTF-8 character <e0><bf> in literal" "" { target c++23 } }
+auto M2 = u8"��"; // { dg-bogus "invalid UTF-8 character <ec><80> in literal" "" { target c++23 } }
+auto N2 = u8"���"; // { dg-bogus "invalid UTF-8 character <ed><a0><80> in literal" "" { target c++23 } }
+auto O2 = u8"����"; // { dg-bogus "invalid UTF-8 character <f0><80><80><80> in literal" "" { target c++23 } }
+auto P2 = u8"����"; // { dg-bogus "invalid UTF-8 character <f0><8f><bf><bf> in literal" "" { target c++23 } }
+auto Q2 = u8"����"; // { dg-bogus "invalid UTF-8 character <f4><90><80><80> in literal" "" { target c++23 } }
+auto R2 = u8"������"; // { dg-bogus "invalid UTF-8 character <fd><bf><bf><bf> in literal" "" { target c++23 } }
+ // { dg-bogus "invalid UTF-8 character <bf> in literal" "" { target c++23 } .-1 }