https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90400
Lewis Hyatt <lhyatt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2023-08-25
CC| |lhyatt at gcc dot gnu.org
Ever confirmed|0 |1
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=103165,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=102409
--- Comment #8 from Lewis Hyatt <lhyatt at gcc dot gnu.org> ---
(In reply to Tobias Burnus from comment #7)
> Regarding "-E": Actually, looking at PR103165 comment 2, I note that for the
> example there 'clang -E' outputs:
>
> "hello; \"\" _Pragma(\"GCC diagnostic pop\") world;"
>
> that is: While the macros are replaced, the (unknown) _Pragma remains as
> _Pragma - such that it is then later only processed when running the
> compiler.
>
> No idea whether that makes sense or not not - just as observation.
This issue was indeed fixed by r12-5454, the fix for PR103165.
I will get a testcase added and then close this one. The testcase will be a
tweaked version of the original one from this PR. It needs to use a different
_Pragma, because nowadays, '#pragma GCC diagnostic' is recognized by the
preprocessor. The existing c-c++-common/gomp/pragma-2.c provides coverage for
that case. '#pragma GCC unroll' is a useful new testcase, being another pragma
that is explicitly ignored during preprocess-only modes.
