https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108094
--- Comment #2 from Li Shaohua <shaohua.li at inf dot ethz.ch> ---
(In reply to Martin Liška from comment #1)
> gcc pr108094.c -g -Wall -Werror -O2
> pr108094.c: In function ‘e’:
> pr108094.c:8:10: error: function returns address of local variable
> [-Werror=return-local-addr]
> 8 | return c;
> | ^
> pr108094.c:4:7: note: declared here
> 4 | int b[1]={0};
> | ^
> cc1: all warnings being treated as errors
>
> The warning is quite obvious and should not be ignored.
So there is indeed a stack-use-after-return, but gcc's ASAN just does not
report it at -O2?
