[Bug c++/71442] [5/6/7 Regression] r232569 breaks -Wunused-*

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71442

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Jun  8 17:57:30 2016
New Revision: 237232

URL: https://gcc.gnu.org/viewcvs?rev=237232&root=gcc&view=rev
Log:
        PR c++/71442
        * pt.c (tsubst_copy): Only set TREE_USED on DECLs.

        * g++.dg/cpp0x/Wunused-variable-1.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/Wunused-variable-1.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog