glandium added a comment. In the realm of unintended consequences, this broke ODR violation detection when linking a rust static library with asan enabled because, while __asan_globals_registered is COMDAT in clang, for some reason, it's not in rust... So you end up with two asan.module_ctor that call __asan_register_elf_globals, each with their own __asan_globals_registered, but both using the same range of globals, so all globals are registered twice. (That's probably a bug in the rust compiler. I thought I'd mention this here in case someone follows the same path as I did)
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