https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95298
--- Comment #8 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:d26f589e61a178e898d8b247042b487287ffe121 commit r14-6797-gd26f589e61a178e898d8b247042b487287ffe121 Author: Jason Merrill <ja...@redhat.com> Date: Sat Nov 18 14:35:22 2023 -0500 c++: sizeof... mangling with alias template [PR95298] We were getting sizeof... mangling wrong when the argument after substitution was a pack expansion that is not a simple T..., such as list<T>... in variadic-mangle4.C or (A+1)... in variadic-mangle5.C. In the former case we ICEd; in the latter case we wrongly mangled it as sZ <expression>. PR c++/95298 gcc/cp/ChangeLog: * mangle.cc (write_expression): Handle v18 sizeof... bug. * pt.cc (tsubst_pack_expansion): Keep TREE_VEC for sizeof... (tsubst_expr): Don't strip TREE_VEC here. gcc/testsuite/ChangeLog: * g++.dg/cpp0x/variadic-mangle2.C: Add non-member. * g++.dg/cpp0x/variadic-mangle4.C: New test. * g++.dg/cpp0x/variadic-mangle5.C: New test. * g++.dg/cpp0x/variadic-mangle5a.C: New test.
