[Bug c++/79548] missing -Wunused-variable on a typedef'd variable in a function template

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79548

--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Tue Mar 21 23:56:52 2017
New Revision: 246337

URL: https://gcc.gnu.org/viewcvs?rev=246337&root=gcc&view=rev
Log:
PR c++/79548 - missing -Wunused-variable on a typedef'd variable in a function
template

gcc/c-family/ChangeLog:

        PR c++/79548
        * c-common.c (set_underlying_type): Mark type used only when
        original del is declared unused.

gcc/testsuite/ChangeLog:

        PR c++/79548
        * g++.dg/warn/Wunused-var-26.C: New test.


Added:
    branches/gcc-5-branch/gcc/testsuite/g++.dg/warn/Wunused-var-26.C
Modified:
    branches/gcc-5-branch/gcc/c-family/ChangeLog
    branches/gcc-5-branch/gcc/c-family/c-common.c
    branches/gcc-5-branch/gcc/testsuite/ChangeLog