https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98545
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Marek Polacek <mpola...@gcc.gnu.org>: https://gcc.gnu.org/g:25fc4d01a8ed1888e6a65597a3387349eb3c950c commit r11-6864-g25fc4d01a8ed1888e6a65597a3387349eb3c950c Author: Marek Polacek <pola...@redhat.com> Date: Wed Jan 13 16:33:39 2021 -0500 c++: ICE when mangling operator name [PR98545] r11-6301 added some asserts in mangle.c, and now we trip over one of them. In particular, it's the one asserting that we didn't get IDENTIFIER_ANY_OP_P when mangling an expression with a dependent name. As this testcase shows, it's possible to get that, so turn the assert into an if and write "on". That changes the mangling in the following way: With this patch: $ c++filt _ZN1i1hIJ1adS1_EEEDTcldtdefpTonclspcvT__EEEDpS2_ decltype (((*this).(operator()))((a)(), (double)(), (a)())) i::h<a, double, a>(a, double, a) G++10: $ c++filt _ZN1i1hIJ1adS1_EEEDTcldtdefpTclspcvT__EEEDpS2_ decltype (((*this).(operator()))((a)(), (double)(), (a)())) i::h<a, double, a>(a, double, a) clang++/icc: $ c++filt _ZN1i1hIJ1adS1_EEEDTclonclspcvT__EEEDpS2_ decltype ((operator())((a)(), (double)(), (a)())) i::h<a, double, a>(a, double, a) This is now tracked in PR98756. gcc/cp/ChangeLog: PR c++/98545 * mangle.c (write_member_name): Emit abi_warn_or_compat_version_crosses warnings regardless of abi_version_at_least. (write_expression): When the expression is a dependent name and an operator name, write "on" before writing its name. gcc/ChangeLog: PR c++/98545 * doc/invoke.texi: Update C++ ABI Version 15 description. gcc/testsuite/ChangeLog: PR c++/98545 * g++.dg/abi/mangle76.C: New test.
