https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107597
--- Comment #2 from Jan Hubicka <hubicka at ucw dot cz> --- Hi, What happens is that we read the symbol as: Visibility: externally_visible semantic_interposition prevailing_def_ironly_exp public weak comdat comdat_group:_ZN12NonTemplated1xE one_only While in visibility pass we promote it to: Visibility: externally_visible semantic_interposition prevailing_def_ironly_exp public comdat So we disolve comdat group and turn off weak. This leads to better code generation and we know it does not affect dynamic linking since in shared library all symbols are interposable. So this is kind of feature. How the ODR violations are detected? I wonder if keeping weak flag disturbs something.
