[Bug tree-optimization/64330] [5 Regression] IPA-ICF merges const exported vars that could be addressable in other TUs

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64330

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Kostya Serebryany from comment #4)
> So, maybe the ODR checker in the current form is not that useless.
> Sorry, couldn't resist :)

But it isn't really an ODR checker.  Here it complains if two different symbols
share the same storage.  Which is fine if they aren't address taken and can't
be address taken elsewhere.