[Bug sanitizer/90347] [UBSAN] __attribute__((weak))__ results in "declared weak after being used" error

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90347

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Caused by -fsanitize=null.