[Bug c++/90108] ICE: Segmentation fault (in c_tree_chain_next)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90108

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Aug 30 12:38:31 2019
New Revision: 275150

URL: https://gcc.gnu.org/viewcvs?rev=275150&root=gcc&view=rev
Log:
        Backported from mainline
        2019-04-19  Jakub Jelinek  <jakub@redhat.com>

        PR c++/90108
        * c-decl.c (merge_decls): If remove is main variant and
        DECL_ORIGINAL_TYPE is some other type, remove a DECL_ORIGINAL_TYPE
        variant that has newdecl as TYPE_NAME if any.

        * decl.c (duplicate_decls): If remove is main variant and
        DECL_ORIGINAL_TYPE is some other type, remove a DECL_ORIGINAL_TYPE
        variant that has newdecl as TYPE_NAME if any.

        * c-c++-common/pr90108.c: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/c-c++-common/pr90108.c
Modified:
    branches/gcc-7-branch/gcc/c/ChangeLog
    branches/gcc-7-branch/gcc/c/c-decl.c
    branches/gcc-7-branch/gcc/cp/ChangeLog
    branches/gcc-7-branch/gcc/cp/decl.c
    branches/gcc-7-branch/gcc/testsuite/ChangeLog