[0/6] Turn some C warnings into errors by default

  This patch series converts the following warnings into errors by
default:

  -Wint-conversion
  -Wimplicit-function-declaration
  -Wimplicit-int
  -Wreturn-mismatch
  -Wincompatible-pointer-types

As explained in the first commit, I decided not to use permerror_opt
because it does not exhibit the existing behavior for -pedantic-errors.

The impact on existing sources of the last commit is not really known to
me at this point.  I plan to start a Fedora build later this week with
an instrumented compiler, to see how much of a compatible impact it will
be.  The first conversion pass through Fedora only covered
-Wimplicit-function-declaration, -Wimplicit-int.  I started looking at
-Wint-conversion, and it did not seem to be too bad, so I think
including it should be fine.  I'm more worried about
-Wincompatible-pointer-types.

I have not yet added a new overview test for -fpermissive.  Such a test
should trigger all the dozen or so places where I introduced
pedpermerror, and see what happens under multiple dialects, each with
-fpermissive and without, and maybe also with and withoyt for
-pedantic-errors in -std=gnu89 and default modes.  I plan to do this
once I get some initial feedback on the direction of these series
because this test would likely be obsolete fairly quickly if changes to
the diagnostics are required.  I did copy some existing tests to test
both the error and warning (-fpermissive) diagnostics, and adjusted
others to expect errors, so there is already quite a bit coverage
without that overview test.

Right now, this series breaks the build on aarch64-linux-gnu due to an
incompatible pointer assignment in libgcc:

  [PATCH] aarch64: Avoid -Wincompatible-pointer-types warning in Linux unwinder
  <https://inbox.sourceware.org/gcc-patches/874jht5tsq.fsf@oldenburg.str.redhat.com/>

Other targets had the same issue previously, but I've already fixed most
of them (I hope).  There could of course be similar issues lurking in
target-specific code, or even in system headers.

With the recent testsuite fixes, the testsuite should be fairly clean
despite these changes.  I verified that on i686-linux-gnu,
powerpc64-linux-gnu, and x86_64-linux-gnu.  There is one
aarch64-linux-gnu testsuite change I'd like the AArch64 maintainers to
review:

  [PATCH] aarch64: Call named function in gcc.target/aarch64/aapcs64/ice_1.c
  <https://inbox.sourceware.org/gcc-patches/87r0kx6eez.fsf@oldenburg.str.redhat.com/>

Recently, I also found a problem in the gm2 testsuite:

  [PATCH] gm2: Add missing declaration of m2pim_M2RTS_Terminate to test
  <https://inbox.sourceware.org/gcc-patches/874jhp3nwf.fsf@oldenburg.str.redhat.com/>

Thanks,
Florian


Florian Weimer (6):
  c-family: Introduce pedpermerror
  c: Turn int-conversion warnings into permerrors
  c: Turn -Wimplicit-function-declaration into a pedpermerror
  c: Turn -Wimplicit-int into a pedpermerror
  c: Turn -Wreturn-mismatch into a pedpermerror
  c: Turn -Wincompatible-pointer-types into a pedpermerror

 gcc/c-family/c-common.h                       |   4 +
 gcc/c-family/c-warn.cc                        |  34 ++++
 gcc/c/c-decl.cc                               |  40 ++--
 gcc/c/c-typeck.cc                             | 164 +++++++++------
 gcc/diagnostic-core.h                         |   3 +
 gcc/diagnostic.cc                             |   7 +
 gcc/doc/invoke.texi                           |  33 +++-
 gcc/testsuite/c-c++-common/pr77624-1.c        |   4 +-
 .../c-c++-common/spellcheck-reserved.c        |   4 +-
 gcc/testsuite/gcc.dg/20030906-1.c             |   2 +-
 gcc/testsuite/gcc.dg/20030906-1a.c            |  21 ++
 gcc/testsuite/gcc.dg/20030906-2.c             |   2 +-
 gcc/testsuite/gcc.dg/20030906-2a.c            |  21 ++
 .../Wimplicit-function-declaration-c99-2.c    |   7 +
 .../Wimplicit-function-declaration-c99.c      |   2 +-
 gcc/testsuite/gcc.dg/Wimplicit-int-1.c        |   2 +-
 gcc/testsuite/gcc.dg/Wimplicit-int-1a.c       |  11 ++
 gcc/testsuite/gcc.dg/Wimplicit-int-4.c        |   2 +-
 gcc/testsuite/gcc.dg/Wimplicit-int-4a.c       |  11 ++
 .../gcc.dg/Wincompatible-pointer-types-2.c    |   2 +-
 .../gcc.dg/Wincompatible-pointer-types-4.c    |   2 +-
 .../gcc.dg/Wincompatible-pointer-types-5.c    |  10 +
 .../gcc.dg/Wincompatible-pointer-types-6.c    |  10 +
 gcc/testsuite/gcc.dg/Wint-conversion-2.c      |   2 +-
 gcc/testsuite/gcc.dg/Wint-conversion-3.c      |   2 +-
 gcc/testsuite/gcc.dg/Wint-conversion-4.c      |  14 ++
 gcc/testsuite/gcc.dg/Wreturn-mismatch-1.c     |   2 +-
 gcc/testsuite/gcc.dg/Wreturn-mismatch-1a.c    |  40 ++++
 gcc/testsuite/gcc.dg/Wreturn-mismatch-2.c     |   2 +-
 gcc/testsuite/gcc.dg/Wreturn-mismatch-2a.c    |  41 ++++
 gcc/testsuite/gcc.dg/anon-struct-11.c         |   5 +-
 gcc/testsuite/gcc.dg/anon-struct-11a.c        | 111 +++++++++++
 gcc/testsuite/gcc.dg/anon-struct-13.c         |   2 +-
 gcc/testsuite/gcc.dg/anon-struct-13a.c        |  76 +++++++
 gcc/testsuite/gcc.dg/assign-warn-1.c          |   2 +-
 gcc/testsuite/gcc.dg/assign-warn-4.c          |  21 ++
 .../gcc.dg/builtin-arith-overflow-4.c         |   2 +-
 .../gcc.dg/builtin-arith-overflow-4a.c        |  43 ++++
 gcc/testsuite/gcc.dg/c23-qual-4.c             |   6 +-
 gcc/testsuite/gcc.dg/dfp/composite-type-2.c   |  58 ++++++
 gcc/testsuite/gcc.dg/dfp/composite-type.c     |   2 +-
 gcc/testsuite/gcc.dg/diag-aka-1.c             |   2 +-
 gcc/testsuite/gcc.dg/diag-aka-1a.c            |  29 +++
 .../gcc.dg/diagnostic-range-bad-return-2.c    |  52 +++++
 .../gcc.dg/diagnostic-range-bad-return.c      |   2 +-
 gcc/testsuite/gcc.dg/diagnostic-types-1.c     |   2 +-
 gcc/testsuite/gcc.dg/diagnostic-types-2.c     |  24 +++
 gcc/testsuite/gcc.dg/enum-compat-1.c          |   2 +-
 gcc/testsuite/gcc.dg/enum-compat-2.c          |  32 +++
 gcc/testsuite/gcc.dg/func-ptr-conv-1.c        |   2 +-
 gcc/testsuite/gcc.dg/func-ptr-conv-2.c        |  56 ++++++
 gcc/testsuite/gcc.dg/gnu23-attr-syntax-2.c    |   2 +-
 gcc/testsuite/gcc.dg/gnu23-attr-syntax-3.c    |  17 ++
 gcc/testsuite/gcc.dg/gomp/pr35738-2.c         |  18 ++
 gcc/testsuite/gcc.dg/gomp/pr35738.c           |   2 +-
 gcc/testsuite/gcc.dg/init-bad-7.c             |   2 +-
 gcc/testsuite/gcc.dg/init-bad-7a.c            |  12 ++
 gcc/testsuite/gcc.dg/init-excess-3.c          |   4 +-
 gcc/testsuite/gcc.dg/missing-header-fixit-1.c |   2 +-
 .../gcc.dg/missing-header-fixit-1a.c          |  37 ++++
 gcc/testsuite/gcc.dg/missing-header-fixit-2.c |   2 +-
 .../gcc.dg/missing-header-fixit-2a.c          |  31 +++
 gcc/testsuite/gcc.dg/missing-header-fixit-4.c |   2 +-
 .../gcc.dg/missing-header-fixit-4a.c          |  27 +++
 gcc/testsuite/gcc.dg/missing-header-fixit-5.c |   2 +-
 .../gcc.dg/missing-header-fixit-5a.c          |  42 ++++
 .../gcc.dg/noncompile/incomplete-3.c          |   2 +-
 gcc/testsuite/gcc.dg/noncompile/pr79758-2.c   |   6 +
 gcc/testsuite/gcc.dg/noncompile/pr79758.c     |   1 +
 gcc/testsuite/gcc.dg/overflow-warn-1.c        |   4 +-
 gcc/testsuite/gcc.dg/overflow-warn-3.c        |   4 +-
 gcc/testsuite/gcc.dg/param-type-mismatch-2.c  | 187 ++++++++++++++++++
 gcc/testsuite/gcc.dg/param-type-mismatch.c    |   2 +-
 gcc/testsuite/gcc.dg/pointer-array-atomic-2.c |  60 ++++++
 gcc/testsuite/gcc.dg/pointer-array-atomic.c   |   2 +-
 gcc/testsuite/gcc.dg/pointer-array-quals-1.c  |   6 +-
 gcc/testsuite/gcc.dg/pr105635-2.c             |  11 ++
 gcc/testsuite/gcc.dg/pr105635.c               |   2 +-
 gcc/testsuite/gcc.dg/pr23075-2.c              |  14 ++
 gcc/testsuite/gcc.dg/pr23075.c                |   2 +-
 gcc/testsuite/gcc.dg/pr29521-a.c              |  15 ++
 gcc/testsuite/gcc.dg/pr29521.c                |   2 +-
 gcc/testsuite/gcc.dg/pr61162-2.c              |   2 +-
 gcc/testsuite/gcc.dg/pr61162-3.c              |  13 ++
 gcc/testsuite/gcc.dg/pr61852.c                |   4 +-
 gcc/testsuite/gcc.dg/pr67730-a.c              |  11 ++
 gcc/testsuite/gcc.dg/pr67730.c                |   2 +-
 gcc/testsuite/gcc.dg/spec-barrier-3.c         |   2 +-
 gcc/testsuite/gcc.dg/spec-barrier-3a.c        |  13 ++
 .../gcc.dg/spellcheck-identifiers-1a.c        | 136 +++++++++++++
 .../gcc.dg/spellcheck-identifiers-2.c         |   2 +-
 .../gcc.dg/spellcheck-identifiers-2a.c        |  33 ++++
 .../gcc.dg/spellcheck-identifiers-3.c         |   2 +-
 .../gcc.dg/spellcheck-identifiers-3a.c        |  45 +++++
 .../gcc.dg/spellcheck-identifiers-4.c         |   2 +-
 .../gcc.dg/spellcheck-identifiers-4a.c        |  10 +
 gcc/testsuite/gcc.dg/spellcheck-identifiers.c |   2 +-
 gcc/testsuite/gcc.dg/transparent-union-1.c    |   2 +-
 gcc/testsuite/gcc.dg/transparent-union-1a.c   |  85 ++++++++
 .../gcc.target/aarch64/acle/memtag_2.c        |   4 +-
 .../gcc.target/aarch64/acle/memtag_2a.c       |  71 +++++++
 .../sve/acle/general-c/ld1sh_gather_1.c       |   2 +-
 .../aarch64/sve/acle/general-c/load_2.c       |   4 +-
 .../aarch64/sve/acle/general-c/load_3.c       |   2 +-
 .../acle/general-c/load_ext_gather_index_1.c  |   2 +-
 .../load_ext_gather_index_restricted_1.c      |   2 +-
 .../acle/general-c/load_ext_gather_offset_1.c |   4 +-
 .../acle/general-c/load_ext_gather_offset_2.c |   4 +-
 .../acle/general-c/load_ext_gather_offset_3.c |   4 +-
 .../acle/general-c/load_ext_gather_offset_4.c |   4 +-
 .../acle/general-c/load_ext_gather_offset_5.c |   4 +-
 .../load_ext_gather_offset_restricted_1.c     |   4 +-
 .../load_ext_gather_offset_restricted_2.c     |   4 +-
 .../load_ext_gather_offset_restricted_3.c     |   4 +-
 .../load_ext_gather_offset_restricted_4.c     |   4 +-
 .../aarch64/sve/acle/general-c/sizeless-1.c   |   8 +-
 .../aarch64/sve/acle/general-c/sizeless-2.c   |   8 +-
 .../aarch64/sve/acle/general-c/store_1.c      |   8 +-
 .../aarch64/sve/acle/general-c/store_2.c      |  10 +-
 .../acle/general-c/store_scatter_index_1.c    |   8 +-
 .../store_scatter_index_restricted_1.c        |   8 +-
 .../acle/general-c/store_scatter_offset_2.c   |   8 +-
 .../store_scatter_offset_restricted_1.c       |   8 +-
 .../aarch64/sve/acle/general/attributes_7.c   |  28 +--
 .../i386/sse2-bfloat16-scalar-typecheck.c     |   4 +-
 .../i386/vect-bfloat16-typecheck_1.c          |   4 +-
 .../i386/vect-bfloat16-typecheck_2.c          |   4 +-
 .../gcc.target/powerpc/conditional-return.c   |   2 +-
 128 files changed, 1920 insertions(+), 231 deletions(-)
 create mode 100644 gcc/testsuite/gcc.dg/20030906-1a.c
 create mode 100644 gcc/testsuite/gcc.dg/20030906-2a.c
 create mode 100644 gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c99-2.c
 create mode 100644 gcc/testsuite/gcc.dg/Wimplicit-int-1a.c
 create mode 100644 gcc/testsuite/gcc.dg/Wimplicit-int-4a.c
 create mode 100644 gcc/testsuite/gcc.dg/Wincompatible-pointer-types-5.c
 create mode 100644 gcc/testsuite/gcc.dg/Wincompatible-pointer-types-6.c
 create mode 100644 gcc/testsuite/gcc.dg/Wint-conversion-4.c
 create mode 100644 gcc/testsuite/gcc.dg/Wreturn-mismatch-1a.c
 create mode 100644 gcc/testsuite/gcc.dg/Wreturn-mismatch-2a.c
 create mode 100644 gcc/testsuite/gcc.dg/anon-struct-11a.c
 create mode 100644 gcc/testsuite/gcc.dg/anon-struct-13a.c
 create mode 100644 gcc/testsuite/gcc.dg/assign-warn-4.c
 create mode 100644 gcc/testsuite/gcc.dg/builtin-arith-overflow-4a.c
 create mode 100644 gcc/testsuite/gcc.dg/dfp/composite-type-2.c
 create mode 100644 gcc/testsuite/gcc.dg/diag-aka-1a.c
 create mode 100644 gcc/testsuite/gcc.dg/diagnostic-range-bad-return-2.c
 create mode 100644 gcc/testsuite/gcc.dg/diagnostic-types-2.c
 create mode 100644 gcc/testsuite/gcc.dg/enum-compat-2.c
 create mode 100644 gcc/testsuite/gcc.dg/func-ptr-conv-2.c
 create mode 100644 gcc/testsuite/gcc.dg/gnu23-attr-syntax-3.c
 create mode 100644 gcc/testsuite/gcc.dg/gomp/pr35738-2.c
 create mode 100644 gcc/testsuite/gcc.dg/init-bad-7a.c
 create mode 100644 gcc/testsuite/gcc.dg/missing-header-fixit-1a.c
 create mode 100644 gcc/testsuite/gcc.dg/missing-header-fixit-2a.c
 create mode 100644 gcc/testsuite/gcc.dg/missing-header-fixit-4a.c
 create mode 100644 gcc/testsuite/gcc.dg/missing-header-fixit-5a.c
 create mode 100644 gcc/testsuite/gcc.dg/noncompile/pr79758-2.c
 create mode 100644 gcc/testsuite/gcc.dg/param-type-mismatch-2.c
 create mode 100644 gcc/testsuite/gcc.dg/pointer-array-atomic-2.c
 create mode 100644 gcc/testsuite/gcc.dg/pr105635-2.c
 create mode 100644 gcc/testsuite/gcc.dg/pr23075-2.c
 create mode 100644 gcc/testsuite/gcc.dg/pr29521-a.c
 create mode 100644 gcc/testsuite/gcc.dg/pr61162-3.c
 create mode 100644 gcc/testsuite/gcc.dg/pr67730-a.c
 create mode 100644 gcc/testsuite/gcc.dg/spec-barrier-3a.c
 create mode 100644 gcc/testsuite/gcc.dg/spellcheck-identifiers-1a.c
 create mode 100644 gcc/testsuite/gcc.dg/spellcheck-identifiers-2a.c
 create mode 100644 gcc/testsuite/gcc.dg/spellcheck-identifiers-3a.c
 create mode 100644 gcc/testsuite/gcc.dg/spellcheck-identifiers-4a.c
 create mode 100644 gcc/testsuite/gcc.dg/transparent-union-1a.c
 create mode 100644 gcc/testsuite/gcc.target/aarch64/acle/memtag_2a.c


base-commit: b51bfee1beed03872ea0289cb47dd2336d9f528c
prerequisite-patch-id: f46d6a56470ab459865ba2e45372d60e131b9ee2
prerequisite-patch-id: 7e0b407ec2bbd5e3b9c7ed1342b08d3677a65283
prerequisite-patch-id: 02e95117add6ada9d5cdb489399fb2e562db76e2
  

Florian Weimer <fweimer@redhat.com> writes:

> This patch series converts the following warnings into errors by
> default:
>
>   -Wint-conversion
>   -Wimplicit-function-declaration
>   -Wimplicit-int
>   -Wreturn-mismatch
>   -Wincompatible-pointer-types
>
> As explained in the first commit, I decided not to use permerror_opt
> because it does not exhibit the existing behavior for -pedantic-errors.
>
> The impact on existing sources of the last commit is not really known to
> me at this point.  I plan to start a Fedora build later this week with
> an instrumented compiler, to see how much of a compatible impact it will
> be.  The first conversion pass through Fedora only covered
> -Wimplicit-function-declaration, -Wimplicit-int.  I started looking at
> -Wint-conversion, and it did not seem to be too bad, so I think
> including it should be fine.  I'm more worried about
> -Wincompatible-pointer-types.
>
> I have not yet added a new overview test for -fpermissive.  Such a test
> should trigger all the dozen or so places where I introduced
> pedpermerror, and see what happens under multiple dialects, each with
> -fpermissive and without, and maybe also with and withoyt for
> -pedantic-errors in -std=gnu89 and default modes.  I plan to do this
> once I get some initial feedback on the direction of these series
> because this test would likely be obsolete fairly quickly if changes to
> the diagnostics are required.  I did copy some existing tests to test
> both the error and warning (-fpermissive) diagnostics, and adjusted
> others to expect errors, so there is already quite a bit coverage
> without that overview test.
>
> Right now, this series breaks the build on aarch64-linux-gnu due to an
> incompatible pointer assignment in libgcc:
>
>   [PATCH] aarch64: Avoid -Wincompatible-pointer-types warning in Linux unwinder
>   <https://inbox.sourceware.org/gcc-patches/874jht5tsq.fsf@oldenburg.str.redhat.com/>
>
> Other targets had the same issue previously, but I've already fixed most
> of them (I hope).  There could of course be similar issues lurking in
> target-specific code, or even in system headers.
>
> With the recent testsuite fixes, the testsuite should be fairly clean
> despite these changes.  I verified that on i686-linux-gnu,
> powerpc64-linux-gnu, and x86_64-linux-gnu.  There is one
> aarch64-linux-gnu testsuite change I'd like the AArch64 maintainers to
> review:

I'll incrementally work on the other targets once stuff lands.

>
>   [PATCH] aarch64: Call named function in gcc.target/aarch64/aapcs64/ice_1.c
>   <https://inbox.sourceware.org/gcc-patches/87r0kx6eez.fsf@oldenburg.str.redhat.com/>
>
> Recently, I also found a problem in the gm2 testsuite:
>
>   [PATCH] gm2: Add missing declaration of m2pim_M2RTS_Terminate to test
>   <https://inbox.sourceware.org/gcc-patches/874jhp3nwf.fsf@oldenburg.str.redhat.com/>
>

Also, please tag PR96284 for all of these.

> Thanks,
> Florian
>
>
> Florian Weimer (6):
>   c-family: Introduce pedpermerror
>   c: Turn int-conversion warnings into permerrors
>   c: Turn -Wimplicit-function-declaration into a pedpermerror
>   c: Turn -Wimplicit-int into a pedpermerror
>   c: Turn -Wreturn-mismatch into a pedpermerror
>   c: Turn -Wincompatible-pointer-types into a pedpermerror
>
>  gcc/c-family/c-common.h                       |   4 +
>  gcc/c-family/c-warn.cc                        |  34 ++++
>  gcc/c/c-decl.cc                               |  40 ++--
>  gcc/c/c-typeck.cc                             | 164 +++++++++------
>  gcc/diagnostic-core.h                         |   3 +
>  gcc/diagnostic.cc                             |   7 +
>  gcc/doc/invoke.texi                           |  33 +++-
>  gcc/testsuite/c-c++-common/pr77624-1.c        |   4 +-
>  .../c-c++-common/spellcheck-reserved.c        |   4 +-
>  gcc/testsuite/gcc.dg/20030906-1.c             |   2 +-
>  gcc/testsuite/gcc.dg/20030906-1a.c            |  21 ++
>  gcc/testsuite/gcc.dg/20030906-2.c             |   2 +-
>  gcc/testsuite/gcc.dg/20030906-2a.c            |  21 ++
>  .../Wimplicit-function-declaration-c99-2.c    |   7 +
>  .../Wimplicit-function-declaration-c99.c      |   2 +-
>  gcc/testsuite/gcc.dg/Wimplicit-int-1.c        |   2 +-
>  gcc/testsuite/gcc.dg/Wimplicit-int-1a.c       |  11 ++
>  gcc/testsuite/gcc.dg/Wimplicit-int-4.c        |   2 +-
>  gcc/testsuite/gcc.dg/Wimplicit-int-4a.c       |  11 ++
>  .../gcc.dg/Wincompatible-pointer-types-2.c    |   2 +-
>  .../gcc.dg/Wincompatible-pointer-types-4.c    |   2 +-
>  .../gcc.dg/Wincompatible-pointer-types-5.c    |  10 +
>  .../gcc.dg/Wincompatible-pointer-types-6.c    |  10 +
>  gcc/testsuite/gcc.dg/Wint-conversion-2.c      |   2 +-
>  gcc/testsuite/gcc.dg/Wint-conversion-3.c      |   2 +-
>  gcc/testsuite/gcc.dg/Wint-conversion-4.c      |  14 ++
>  gcc/testsuite/gcc.dg/Wreturn-mismatch-1.c     |   2 +-
>  gcc/testsuite/gcc.dg/Wreturn-mismatch-1a.c    |  40 ++++
>  gcc/testsuite/gcc.dg/Wreturn-mismatch-2.c     |   2 +-
>  gcc/testsuite/gcc.dg/Wreturn-mismatch-2a.c    |  41 ++++
>  gcc/testsuite/gcc.dg/anon-struct-11.c         |   5 +-
>  gcc/testsuite/gcc.dg/anon-struct-11a.c        | 111 +++++++++++
>  gcc/testsuite/gcc.dg/anon-struct-13.c         |   2 +-
>  gcc/testsuite/gcc.dg/anon-struct-13a.c        |  76 +++++++
>  gcc/testsuite/gcc.dg/assign-warn-1.c          |   2 +-
>  gcc/testsuite/gcc.dg/assign-warn-4.c          |  21 ++
>  .../gcc.dg/builtin-arith-overflow-4.c         |   2 +-
>  .../gcc.dg/builtin-arith-overflow-4a.c        |  43 ++++
>  gcc/testsuite/gcc.dg/c23-qual-4.c             |   6 +-
>  gcc/testsuite/gcc.dg/dfp/composite-type-2.c   |  58 ++++++
>  gcc/testsuite/gcc.dg/dfp/composite-type.c     |   2 +-
>  gcc/testsuite/gcc.dg/diag-aka-1.c             |   2 +-
>  gcc/testsuite/gcc.dg/diag-aka-1a.c            |  29 +++
>  .../gcc.dg/diagnostic-range-bad-return-2.c    |  52 +++++
>  .../gcc.dg/diagnostic-range-bad-return.c      |   2 +-
>  gcc/testsuite/gcc.dg/diagnostic-types-1.c     |   2 +-
>  gcc/testsuite/gcc.dg/diagnostic-types-2.c     |  24 +++
>  gcc/testsuite/gcc.dg/enum-compat-1.c          |   2 +-
>  gcc/testsuite/gcc.dg/enum-compat-2.c          |  32 +++
>  gcc/testsuite/gcc.dg/func-ptr-conv-1.c        |   2 +-
>  gcc/testsuite/gcc.dg/func-ptr-conv-2.c        |  56 ++++++
>  gcc/testsuite/gcc.dg/gnu23-attr-syntax-2.c    |   2 +-
>  gcc/testsuite/gcc.dg/gnu23-attr-syntax-3.c    |  17 ++
>  gcc/testsuite/gcc.dg/gomp/pr35738-2.c         |  18 ++
>  gcc/testsuite/gcc.dg/gomp/pr35738.c           |   2 +-
>  gcc/testsuite/gcc.dg/init-bad-7.c             |   2 +-
>  gcc/testsuite/gcc.dg/init-bad-7a.c            |  12 ++
>  gcc/testsuite/gcc.dg/init-excess-3.c          |   4 +-
>  gcc/testsuite/gcc.dg/missing-header-fixit-1.c |   2 +-
>  .../gcc.dg/missing-header-fixit-1a.c          |  37 ++++
>  gcc/testsuite/gcc.dg/missing-header-fixit-2.c |   2 +-
>  .../gcc.dg/missing-header-fixit-2a.c          |  31 +++
>  gcc/testsuite/gcc.dg/missing-header-fixit-4.c |   2 +-
>  .../gcc.dg/missing-header-fixit-4a.c          |  27 +++
>  gcc/testsuite/gcc.dg/missing-header-fixit-5.c |   2 +-
>  .../gcc.dg/missing-header-fixit-5a.c          |  42 ++++
>  .../gcc.dg/noncompile/incomplete-3.c          |   2 +-
>  gcc/testsuite/gcc.dg/noncompile/pr79758-2.c   |   6 +
>  gcc/testsuite/gcc.dg/noncompile/pr79758.c     |   1 +
>  gcc/testsuite/gcc.dg/overflow-warn-1.c        |   4 +-
>  gcc/testsuite/gcc.dg/overflow-warn-3.c        |   4 +-
>  gcc/testsuite/gcc.dg/param-type-mismatch-2.c  | 187 ++++++++++++++++++
>  gcc/testsuite/gcc.dg/param-type-mismatch.c    |   2 +-
>  gcc/testsuite/gcc.dg/pointer-array-atomic-2.c |  60 ++++++
>  gcc/testsuite/gcc.dg/pointer-array-atomic.c   |   2 +-
>  gcc/testsuite/gcc.dg/pointer-array-quals-1.c  |   6 +-
>  gcc/testsuite/gcc.dg/pr105635-2.c             |  11 ++
>  gcc/testsuite/gcc.dg/pr105635.c               |   2 +-
>  gcc/testsuite/gcc.dg/pr23075-2.c              |  14 ++
>  gcc/testsuite/gcc.dg/pr23075.c                |   2 +-
>  gcc/testsuite/gcc.dg/pr29521-a.c              |  15 ++
>  gcc/testsuite/gcc.dg/pr29521.c                |   2 +-
>  gcc/testsuite/gcc.dg/pr61162-2.c              |   2 +-
>  gcc/testsuite/gcc.dg/pr61162-3.c              |  13 ++
>  gcc/testsuite/gcc.dg/pr61852.c                |   4 +-
>  gcc/testsuite/gcc.dg/pr67730-a.c              |  11 ++
>  gcc/testsuite/gcc.dg/pr67730.c                |   2 +-
>  gcc/testsuite/gcc.dg/spec-barrier-3.c         |   2 +-
>  gcc/testsuite/gcc.dg/spec-barrier-3a.c        |  13 ++
>  .../gcc.dg/spellcheck-identifiers-1a.c        | 136 +++++++++++++
>  .../gcc.dg/spellcheck-identifiers-2.c         |   2 +-
>  .../gcc.dg/spellcheck-identifiers-2a.c        |  33 ++++
>  .../gcc.dg/spellcheck-identifiers-3.c         |   2 +-
>  .../gcc.dg/spellcheck-identifiers-3a.c        |  45 +++++
>  .../gcc.dg/spellcheck-identifiers-4.c         |   2 +-
>  .../gcc.dg/spellcheck-identifiers-4a.c        |  10 +
>  gcc/testsuite/gcc.dg/spellcheck-identifiers.c |   2 +-
>  gcc/testsuite/gcc.dg/transparent-union-1.c    |   2 +-
>  gcc/testsuite/gcc.dg/transparent-union-1a.c   |  85 ++++++++
>  .../gcc.target/aarch64/acle/memtag_2.c        |   4 +-
>  .../gcc.target/aarch64/acle/memtag_2a.c       |  71 +++++++
>  .../sve/acle/general-c/ld1sh_gather_1.c       |   2 +-
>  .../aarch64/sve/acle/general-c/load_2.c       |   4 +-
>  .../aarch64/sve/acle/general-c/load_3.c       |   2 +-
>  .../acle/general-c/load_ext_gather_index_1.c  |   2 +-
>  .../load_ext_gather_index_restricted_1.c      |   2 +-
>  .../acle/general-c/load_ext_gather_offset_1.c |   4 +-
>  .../acle/general-c/load_ext_gather_offset_2.c |   4 +-
>  .../acle/general-c/load_ext_gather_offset_3.c |   4 +-
>  .../acle/general-c/load_ext_gather_offset_4.c |   4 +-
>  .../acle/general-c/load_ext_gather_offset_5.c |   4 +-
>  .../load_ext_gather_offset_restricted_1.c     |   4 +-
>  .../load_ext_gather_offset_restricted_2.c     |   4 +-
>  .../load_ext_gather_offset_restricted_3.c     |   4 +-
>  .../load_ext_gather_offset_restricted_4.c     |   4 +-
>  .../aarch64/sve/acle/general-c/sizeless-1.c   |   8 +-
>  .../aarch64/sve/acle/general-c/sizeless-2.c   |   8 +-
>  .../aarch64/sve/acle/general-c/store_1.c      |   8 +-
>  .../aarch64/sve/acle/general-c/store_2.c      |  10 +-
>  .../acle/general-c/store_scatter_index_1.c    |   8 +-
>  .../store_scatter_index_restricted_1.c        |   8 +-
>  .../acle/general-c/store_scatter_offset_2.c   |   8 +-
>  .../store_scatter_offset_restricted_1.c       |   8 +-
>  .../aarch64/sve/acle/general/attributes_7.c   |  28 +--
>  .../i386/sse2-bfloat16-scalar-typecheck.c     |   4 +-
>  .../i386/vect-bfloat16-typecheck_1.c          |   4 +-
>  .../i386/vect-bfloat16-typecheck_2.c          |   4 +-
>  .../gcc.target/powerpc/conditional-return.c   |   2 +-
>  128 files changed, 1920 insertions(+), 231 deletions(-)
>  create mode 100644 gcc/testsuite/gcc.dg/20030906-1a.c
>  create mode 100644 gcc/testsuite/gcc.dg/20030906-2a.c
>  create mode 100644 gcc/testsuite/gcc.dg/Wimplicit-function-declaration-c99-2.c
>  create mode 100644 gcc/testsuite/gcc.dg/Wimplicit-int-1a.c
>  create mode 100644 gcc/testsuite/gcc.dg/Wimplicit-int-4a.c
>  create mode 100644 gcc/testsuite/gcc.dg/Wincompatible-pointer-types-5.c
>  create mode 100644 gcc/testsuite/gcc.dg/Wincompatible-pointer-types-6.c
>  create mode 100644 gcc/testsuite/gcc.dg/Wint-conversion-4.c
>  create mode 100644 gcc/testsuite/gcc.dg/Wreturn-mismatch-1a.c
>  create mode 100644 gcc/testsuite/gcc.dg/Wreturn-mismatch-2a.c
>  create mode 100644 gcc/testsuite/gcc.dg/anon-struct-11a.c
>  create mode 100644 gcc/testsuite/gcc.dg/anon-struct-13a.c
>  create mode 100644 gcc/testsuite/gcc.dg/assign-warn-4.c
>  create mode 100644 gcc/testsuite/gcc.dg/builtin-arith-overflow-4a.c
>  create mode 100644 gcc/testsuite/gcc.dg/dfp/composite-type-2.c
>  create mode 100644 gcc/testsuite/gcc.dg/diag-aka-1a.c
>  create mode 100644 gcc/testsuite/gcc.dg/diagnostic-range-bad-return-2.c
>  create mode 100644 gcc/testsuite/gcc.dg/diagnostic-types-2.c
>  create mode 100644 gcc/testsuite/gcc.dg/enum-compat-2.c
>  create mode 100644 gcc/testsuite/gcc.dg/func-ptr-conv-2.c
>  create mode 100644 gcc/testsuite/gcc.dg/gnu23-attr-syntax-3.c
>  create mode 100644 gcc/testsuite/gcc.dg/gomp/pr35738-2.c
>  create mode 100644 gcc/testsuite/gcc.dg/init-bad-7a.c
>  create mode 100644 gcc/testsuite/gcc.dg/missing-header-fixit-1a.c
>  create mode 100644 gcc/testsuite/gcc.dg/missing-header-fixit-2a.c
>  create mode 100644 gcc/testsuite/gcc.dg/missing-header-fixit-4a.c
>  create mode 100644 gcc/testsuite/gcc.dg/missing-header-fixit-5a.c
>  create mode 100644 gcc/testsuite/gcc.dg/noncompile/pr79758-2.c
>  create mode 100644 gcc/testsuite/gcc.dg/param-type-mismatch-2.c
>  create mode 100644 gcc/testsuite/gcc.dg/pointer-array-atomic-2.c
>  create mode 100644 gcc/testsuite/gcc.dg/pr105635-2.c
>  create mode 100644 gcc/testsuite/gcc.dg/pr23075-2.c
>  create mode 100644 gcc/testsuite/gcc.dg/pr29521-a.c
>  create mode 100644 gcc/testsuite/gcc.dg/pr61162-3.c
>  create mode 100644 gcc/testsuite/gcc.dg/pr67730-a.c
>  create mode 100644 gcc/testsuite/gcc.dg/spec-barrier-3a.c
>  create mode 100644 gcc/testsuite/gcc.dg/spellcheck-identifiers-1a.c
>  create mode 100644 gcc/testsuite/gcc.dg/spellcheck-identifiers-2a.c
>  create mode 100644 gcc/testsuite/gcc.dg/spellcheck-identifiers-3a.c
>  create mode 100644 gcc/testsuite/gcc.dg/spellcheck-identifiers-4a.c
>  create mode 100644 gcc/testsuite/gcc.dg/transparent-union-1a.c
>  create mode 100644 gcc/testsuite/gcc.target/aarch64/acle/memtag_2a.c
>
>
> base-commit: b51bfee1beed03872ea0289cb47dd2336d9f528c
> prerequisite-patch-id: f46d6a56470ab459865ba2e45372d60e131b9ee2
> prerequisite-patch-id: 7e0b407ec2bbd5e3b9c7ed1342b08d3677a65283
> prerequisite-patch-id: 02e95117add6ada9d5cdb489399fb2e562db76e2