[Bug c++/100198] [12 Regression] ICE with enum in lambda in pack expansion

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100198

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jason Merrill <ja...@gcc.gnu.org>:

https://gcc.gnu.org/g:4d2efec9f229c2e2e7cb6c3f06beb4c3e9d244a1

commit r12-6909-g4d2efec9f229c2e2e7cb6c3f06beb4c3e9d244a1
Author: Jason Merrill <ja...@redhat.com>
Date:   Thu Jan 27 17:46:43 2022 -0500

    c++: pack in enumerator in lambda [PR100198]

    The GCC 8 lambda overhaul fixed most uses of lambdas in pack expansions,
but
    local enums and classes within such lambdas that depend on parameter packs
    are still broken.  For now, give a sorry instead of an ICE or incorrect
    error.

            PR c++/100198
            PR c++/100030
            PR c++/100282

    gcc/cp/ChangeLog:

            * parser.cc (cp_parser_enumerator_definition): Sorry on parameter
            pack in lambda.
            (cp_parser_class_head): And in class attributes.
            * pt.cc (check_for_bare_parameter_packs): Sorry instead of error
            in lambda.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp0x/lambda/lambda-variadic13.C: Accept the sorry
            as well as the correct error.
            * g++.dg/cpp0x/lambda/lambda-variadic14.C: Likewise.
            * g++.dg/cpp0x/lambda/lambda-variadic14a.C: New test.
            * g++.dg/cpp0x/lambda/lambda-variadic15.C: New test.
            * g++.dg/cpp0x/lambda/lambda-variadic16.C: New test.