[Bug tree-optimization/113922] -Wstringop-overflow with FORTIFY_SOURCE=3 and O{1,2,3} generates a false positive for 0-sized structs

[sergiodj at sergiodj dot net via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113922

--- Comment #6 from Sergio Durigan Junior <sergiodj at sergiodj dot net> ---
Thanks for the quick analysis.

It seems that the following glibc commit dropped size hints from access when
FORTIFY_SOURCE=3:

https://sourceware.org/git/?p=glibc.git;a=commit;h=e938c02748402c50f60ba0eb983273e7b52937d1

I'll report a bug against glibc and mention this conversation.

Thanks.