[Bug c++/80129] wrong code with ternary struct assignment to const

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80129

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Mar 22 18:45:48 2017
New Revision: 246401

URL: https://gcc.gnu.org/viewcvs?rev=246401&root=gcc&view=rev
Log:
        PR c++/80129
        * gimplify.c (gimplify_modify_expr_rhs) <case COND_EXPR>: Clear
        TREE_READONLY on result if writing it more than once.

        * g++.dg/torture/pr80129.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr80129.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimplify.c
    trunk/gcc/testsuite/ChangeLog