https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93918
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
As documented, -fstack-arrays is enabled for -Ofast.
https://gcc.gnu.org/onlinedocs/gcc-9.2.0/gcc/Optimize-Options.html#index-Ofast
:
Disregard strict standards compliance. -Ofast enables all -O3 optimizations. It
also enables optimizations that are not valid for all standard-compliant
programs. It turns on -ffast-math and the Fortran-specific -fstack-arrays,
unless -fmax-stack-var-size is specified, and -fno-protect-parens.
