[Bug c++/79372] ICE on C++ code with illegal decomposition declaration on x86_64-linux-gnu: in tsubst_decomp_names, at cp/pt.c:15599

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79372

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Feb  6 20:03:15 2017
New Revision: 245218

URL: https://gcc.gnu.org/viewcvs?rev=245218&root=gcc&view=rev
Log:
        PR c++/79372
        * decl.c (cp_finish_decomp): On error set decl type to error_mark_node.
        * pt.c (tsubst_expr): Don't call tsubst_decomp_names on decompositions
        with error_mark_node type.

        * g++.dg/cpp1z/decomp25.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/cpp1z/decomp25.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog