https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108673
Christian Franke <franke at computer dot org> changed:
What |Removed |Added
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CC| |franke at computer dot org
--- Comment #1 from Christian Franke <franke at computer dot org> ---
Could also be reproduced with x86_64-pc-cygwin-gcc 11.3.0 and
x86_64-w64-mingw32-gcc 11.3.0 from current Cygwin distribution:
$ gcc -O1 -fstack-clash-protection -S f.c
during RTL pass: final
x.c: In function ‘foo’:
x.c:5:1: internal compiler error: in seh_emit_stackalloc, at
config/i386/winnt.c:1056
5 | }
| ^
...
The error does not occur if -fipa-pure-const ("Discover which functions are
pure or constant") is disabled:
$ gcc -O3 -fno-ipa-pure-const -fstack-clash-protection -S f.c; echo $?
0
Assembly output looks sane then.
