[Bug c++/95354] GCC misuse "nonnull-attribute" option and can not detect it as UB as well

[haoxintu at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95354

--- Comment #3 from Haoxin Tu <haoxintu at gmail dot com> ---
I see. Are there any cases that can trigger the UB of nonnull-attribute? I
doubt the usage of “-fsanitize=nonnull-attribute” in GCC...