[Bug sanitizer/81040] asan false negative if parameter of a global function passed by reference

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81040

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Likely instrumentation simply is missing

       goo((int*)&a);

given 'a' lives on the stack.  With static foo and IPA CP applied it eventually
sees a address-taken constant pool reference.