[PATCH] D108680: PR48030: Fix COMDAT-related linking problem with C++ thread_local static data members.

[Richard Smith - zygoloid via Phabricator via cfe-commits]

rsmith added a comment.

Note that there's a potential ABI impact here: because we accidentally put the `__cxx_global_init` function into a COMDAT with the variable, that meant that the `_ZTH` symbol (which is an alias to `__cxx_global_init`) also pointed into that same COMDAT. I'm not sure how much that matters given that the old behavior was broken.


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https://reviews.llvm.org/D108680