https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109790
--- Comment #10 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Simon Martin <simar...@gcc.gnu.org>: https://gcc.gnu.org/g:a030fcad4f9f490a08db0a4cad4c22635a0585c1 commit r15-3797-ga030fcad4f9f490a08db0a4cad4c22635a0585c1 Author: Simon Martin <si...@nasilyan.com> Date: Mon Sep 16 13:45:32 2024 +0200 c++: Don't crash when mangling member with anonymous union or template type [PR100632, PR109790] We currently crash upon mangling members that have an anonymous union or a template operator type. The problem is that before calling write_unqualified_name, write_member_name asserts that it has a declaration whose DECL_NAME is an identifier node that is not that of an operator. This is wrong: - In PR100632, it's an anonymous union declaration, hence a 0 DECL_NAME - In PR109790, it's a legitimate template declaration for an operator (this was accepted up to GCC 10) This assert was added via r11-6301, to be sure that we do write the "on" marker for operator members. This patch removes that assert and instead - Lets members with an anonymous union type go through - For operators, adds the missing "on" marker for ABI versions greater than the highest usable with GCC 10 PR c++/109790 PR c++/100632 gcc/cp/ChangeLog: * mangle.cc (write_member_name): Handle members whose type is an anonymous union member. Write missing "on" marker for operators when ABI version is at least 16. gcc/testsuite/ChangeLog: * g++.dg/cpp0x/decltype83.C: New test. * g++.dg/cpp0x/decltype83a.C: New test. * g++.dg/cpp1y/lambda-ice3.C: New test. * g++.dg/cpp1y/lambda-ice3a.C: New test. * g++.dg/cpp2a/nontype-class67.C: New test.
