On Wed, Oct 18, 2023 at 05:03:57PM -0400, Lewis Hyatt wrote:
> May I please ping this one, and/or, is it something straightforward
> enough I can just commit it as obvious? Thanks!
> https://gcc.gnu.org/pipermail/gcc-patches/2023-October/631814.html

Please go ahead and apply the patch, thanks.

Sorry about the wait.
 
> -Lewis
> 
> On Mon, Oct 2, 2023 at 6:23 PM Lewis Hyatt <lhy...@gmail.com> wrote:
> >
> > Hello-
> >
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82335 is another
> > _Pragma-related bug that got fixed in GCC 12 but is still open. Before
> > closing it out, I thought it would be good to add the testcase from that
> > PR, which we don't have exactly in the testsuite already. Is it OK please?
> > Thanks!
> >
> > -Lewis
> >
> > -- >8 --
> >
> > This PR was fixed by r12-4797 and r12-5454. Add test coverage from the PR
> > that is not represented elsewhere.
> >
> > gcc/testsuite/ChangeLog:
> >
> >         PR preprocessor/82335
> >         * c-c++-common/cpp/diagnostic-pragma-3.c: New test.
> > ---
> >  .../c-c++-common/cpp/diagnostic-pragma-3.c    | 37 +++++++++++++++++++
> >  1 file changed, 37 insertions(+)
> >  create mode 100644 gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c
> >
> > diff --git a/gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c 
> > b/gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c
> > new file mode 100644
> > index 00000000000..459dcec73b3
> > --- /dev/null
> > +++ b/gcc/testsuite/c-c++-common/cpp/diagnostic-pragma-3.c
> > @@ -0,0 +1,37 @@
> > +/* This is like diagnostic-pragma-2.c, but handles the case where 
> > everything
> > +   is wrapped inside a macro, which previously caused additional issues 
> > tracked
> > +   in PR preprocessor/82335.  */
> > +
> > +/* { dg-do compile } */
> > +/* { dg-additional-options "-save-temps -Wattributes -Wtype-limits" } */
> > +
> > +#define B _Pragma("GCC diagnostic push") \
> > +          _Pragma("GCC diagnostic ignored \"-Wattributes\"")
> > +#define E _Pragma("GCC diagnostic pop")
> > +
> > +#define X() B int __attribute((unknown_attr)) x; E
> > +#define Y   B int __attribute((unknown_attr)) y; E
> > +#define WRAP(x) x
> > +
> > +void test1(void)
> > +{
> > +  WRAP(X())
> > +  WRAP(Y)
> > +}
> > +
> > +/* Additional test provided on the PR.  */
> > +#define PRAGMA(...) _Pragma(#__VA_ARGS__)
> > +#define PUSH_IGN(X) PRAGMA(GCC diagnostic push) PRAGMA(GCC diagnostic 
> > ignored X)
> > +#define POP() PRAGMA(GCC diagnostic pop)
> > +#define TEST(X, Y) \
> > +  PUSH_IGN("-Wtype-limits") \
> > +  int Y = (__typeof(X))-1 < 0; \
> > +  POP()
> > +
> > +int test2()
> > +{
> > +  unsigned x;
> > +  TEST(x, i1);
> > +  WRAP(TEST(x, i2))
> > +  return i1 + i2;
> > +}
> 

Marek

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