[Bug c++/68965] [5 Regression] `-Wunused-parameter` is reported in variadic lambda or function using sizeof...(xs)

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68965

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Tue Jan 19 17:11:53 2016
New Revision: 232574

URL: https://gcc.gnu.org/viewcvs?rev=232574&root=gcc&view=rev
Log:
        PR c++/68965
        * pt.c (tsubst_copy): Mark elements in expanded vector as used.

        * g++.dg/cpp1y/parameter-pack-1.C: New test.
        * g++.dg/cpp1y/parameter-pack-2.C: New test.

Added:
    branches/gcc-5-branch/gcc/testsuite/g++.dg/cpp1y/parameter-pack-1.C
    branches/gcc-5-branch/gcc/testsuite/g++.dg/cpp1y/parameter-pack-2.C
Modified:
    branches/gcc-5-branch/gcc/cp/ChangeLog
    branches/gcc-5-branch/gcc/cp/pt.c
    branches/gcc-5-branch/gcc/testsuite/ChangeLog