[Bug c++/83634] [8 Regression] ICE in useless_type_conversion_p, at gimple-expr.c:86

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83634

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Jan  3 12:16:13 2018
New Revision: 256174

URL: https://gcc.gnu.org/viewcvs?rev=256174&root=gcc&view=rev
Log:
        PR c++/83634
        * cp-gimplify.c (cp_fold) <case NOP_EXPR>: If the operand folds to
        error_mark_node, return error_mark_node.

        * g++.dg/parse/pr83634.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/parse/pr83634.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/cp-gimplify.c
    trunk/gcc/testsuite/ChangeLog