[Bug sanitizer/85777] [7/8/9 Regression] -fsanitize=undefined makes a -Wmaybe-uninitialized warning disappear

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85777

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The expectations that sanitization doesn't change generated warnings is a wrong
one, the runtime instrumentation affects the code generation so much that
necessarily some further warnings will be emitted and others omitted.
If you care about warnings as well as sanitization, I'd suggest separate builds
for warnings and for sanitization, the latter perhaps with -w.