[Bug c++/108099] [12 Regression] ICE with type alias with `signed __int128_t`

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108099

--- Comment #20 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Jason Merrill
<ja...@gcc.gnu.org>:

https://gcc.gnu.org/g:32955c1c2246aa336d3fd2423c32546c39a6ca30

commit r12-9429-g32955c1c2246aa336d3fd2423c32546c39a6ca30
Author: Jason Merrill <ja...@redhat.com>
Date:   Thu Mar 9 17:35:24 2023 -0500

    c++: signed __int128_t [PR108099]

    The code for handling signed + typedef was breaking on __int128_t, because
    it isn't a proper typedef: it doesn't have DECL_ORIGINAL_TYPE.

            PR c++/108099

    gcc/cp/ChangeLog:

            * decl.cc (grokdeclarator): Handle non-typedef typedef_decl.

    gcc/testsuite/ChangeLog:

            * g++.dg/ext/int128-7.C: New test.