[Bug c++/106761] [13 regression] g++.dg/modules/xtreme-header-*_b.C test cases fails after r13-2158-g02f6b405f0e9dc

[cvs-commit at gcc dot gnu.org]

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 <ppalka@gcc.gnu.org>:

https://gcc.gnu.org/g:84b2ab97e412d9514730db335a795c7db2fb42cc

commit r13-2735-g84b2ab97e412d9514730db335a795c7db2fb42cc
Author: Patrick Palka <ppalka@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.