[Bug c++/79654] [7 Regression] ICE on invalid c++ code in register_dtor_fn in cp/decl.c:7877

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79654

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 21 18:00:35 2017
New Revision: 245639

URL: https://gcc.gnu.org/viewcvs?rev=245639&root=gcc&view=rev
Log:
        PR c++/79654
        * decl.c (cp_finish_decomp): Don't set decl's type to error_mark_node
        on error.
        * pt.c (tsubst_decomp_names): Return error_mark_node if the first
        decl after the decomposition artificial decl has error_mark_node.
        * decl2.c (prune_vars_needing_no_initialization): Use error_operand_p
        instead of just == error_mark_node comparison.

        * g++.dg/cpp1z/decomp26.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/cpp1z/decomp26.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/cp/decl2.c
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog