[Bug bootstrap/63888] [5 Regression] bootstrap failed when configured with -with-build-config=bootstrap-asan --disable-werror

[kcc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63888

--- Comment #6 from Kostya Serebryany <kcc at gcc dot gnu.org> ---
(In reply to Yury Gribov from comment #5)
> Perhaps ODR check should check that names of global variables match before
> issuing warning?

The variables are generated by the compiler, right? 
(These are switch tables)

Do we want to instrument them at all? 
I.e. is a buffer overflow on these variables possible? 

If we don't instrument them we won't report an ODR violation. 

>> GCC with -fmerge-all-constants also merges many read-only constants, even addressable ones, when they have the same content.

Then I guess we may have other false positives. 
We may want to disable -fmerge-all-constants under asan