https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106761
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Patrick Palka <ppa...@gcc.gnu.org>: https://gcc.gnu.org/g:84b2ab97e412d9514730db335a795c7db2fb42cc commit r13-2735-g84b2ab97e412d9514730db335a795c7db2fb42cc Author: Patrick Palka <ppa...@redhat.com> Date: Tue Sep 20 10:19:30 2022 -0400 c++: stream PACK_EXPANSION_EXTRA_ARGS [PR106761] It looks like after the libstdc++ commit r13-2158-g02f6b405f0e9dc some xtreme-header-* tests are failing with "conflicting global module declaration" errors ultimately because we're neglecting to stream PACK_EXPANSION_EXTRA_ARGS, which leads to wrong equivalences of different partial instantiations of _TupleConstraints::__constructible. PR c++/106761 gcc/cp/ChangeLog: * module.cc (trees_out::type_node) <case TYPE_PACK_EXPANSION>: Stream PACK_EXPANSION_EXTRA_ARGS. (trees_in::tree_node) <case TYPE_PACK_EXPANSION>: Likewise. gcc/testsuite/ChangeLog: * g++.dg/modules/pr106761.h: New test. * g++.dg/modules/pr106761_a.H: New test. * g++.dg/modules/pr106761_b.C: New test.
