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Subject: [Bug c++/99445] [11 Regression] ICE in hashtab_chk_error, at
 hash-table.c:137 since r11-7011-g6e0a231a4aa2407b
Date: Mon, 28 Mar 2022 19:13:14 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99445

--- Comment #13 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Jason Merrill
<jason@gcc.gnu.org>:

https://gcc.gnu.org/g:3bf2e1bfc9858516e028137b313e4c689b0c8cd4

commit r11-9707-g3bf2e1bfc9858516e028137b313e4c689b0c8cd4
Author: Jason Merrill <jason@redhat.com>
Date:   Fri Mar 25 11:26:06 2022 -0400

    c++: ICE with alias in pack expansion [PR103769]

    This was breaking because when we stripped the 't' typedef in s<t<Args>=
...>
    to be s<Args...>, the TYPE_MAIN_VARIANT of "Args..." was still
    "t<Args>...", because type pack expansions are treated as types.  Fixed=
 by
    using the right function to copy a "type".

            PR c++/99445
            PR c++/103769

    gcc/cp/ChangeLog:

            * tree.c (strip_typedefs): Use build_distinct_type_copy.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp0x/variadic-alias5.C: New test.=