https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114992
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:ab716829da7c885b97ac2649c7c0ff5c7703ffa5 commit r15-8651-gab716829da7c885b97ac2649c7c0ff5c7703ffa5 Author: Jason Merrill <ja...@redhat.com> Date: Thu Mar 20 12:57:15 2025 -0400 ipa: target clone and mangling alias [PR114992] Since the mangling of the second lambda changed (previously we counted all lambdas, now we only count lambdas with the same signature), we generate_mangling_alias for handler<lambda2> for backward compatibility. Since handler is COMDAT, resolve_alias puts the alias in the same comdat group as handler itself. Then create_dispatcher_calls tries to add the alias to the same comdat group as the dispatcher, but it's already in a same_comdat_group, so we ICE. It seems like we're just missing a remove_from_same_comdat_group before add_to_same_comdat_group. PR c++/114992 gcc/ChangeLog: * multiple_target.cc (create_dispatcher_calls): remove_from_same_comdat_group before add_to_same_comdat_group. gcc/testsuite/ChangeLog: * g++.target/i386/mangling-alias1.C: New test.
