diagnostics: Add test for fixed _Pragma location issue [PR91669]
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Commit Message
This PR related to _Pragma locations and diagnostic pragmas was fixed by a
combination of r10-325 and r13-1596. Add missing test coverage.
gcc/testsuite/ChangeLog:
PR c/91669
* c-c++-common/pr91669.c: New test.
---
Notes:
Hello-
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91669#c4
The above PR was already fixed, but I'd like to add missing test coverage
before closing it. Does this look OK please? Thanks!
-Lewis
gcc/testsuite/c-c++-common/pr91669.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
create mode 100644 gcc/testsuite/c-c++-common/pr91669.c
Comments
On 10/3/22 16:32, Lewis Hyatt via Gcc-patches wrote:
> This PR related to _Pragma locations and diagnostic pragmas was fixed by a
> combination of r10-325 and r13-1596. Add missing test coverage.
>
> gcc/testsuite/ChangeLog:
>
> PR c/91669
> * c-c++-common/pr91669.c: New test.
OK.
jeff
new file mode 100644
@@ -0,0 +1,28 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-Wreturn-type" } */
+
+/* The location of the right brace within the macro expansion can be an adhoc
+ location, because the frontend attached custom data to it. In order for the
+ diagnostic pragma to correctly understand that the diagnostic pop occurs
+ after the function and not before, linemap_location_before_p needs to handle
+ adhoc locations within a macro map, which was broken until fixed by r10-325.
+ Verify that we get it right, both when the brace is a macro token and when it
+ is part of the macro expansion. */
+
+#define ENDFUNC1 \
+ _Pragma("GCC diagnostic push") \
+ _Pragma("GCC diagnostic ignored \"-Wreturn-type\"") \
+ } /* { dg-bogus {-Wreturn-type} } */ \
+ _Pragma("GCC diagnostic pop")
+
+int f1 () {
+ENDFUNC1 /* { dg-bogus {in expansion of macro 'ENDFUNC1' } } */
+
+#define ENDFUNC2(term) \
+ _Pragma("GCC diagnostic push") \
+ _Pragma("GCC diagnostic ignored \"-Wreturn-type\"") \
+ term /* { dg-bogus {in definition of macro 'ENDFUNC2'} } */ \
+ _Pragma("GCC diagnostic pop")
+
+int f2 () {
+ENDFUNC2(}) /* { dg-bogus {-Wreturn-type} } */