[Bug c/64637] Incorrect location for -Wunused-value warnings in for-loop

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64637

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Dec 16 16:50:07 2015
New Revision: 231700

URL: https://gcc.gnu.org/viewcvs?rev=231700&root=gcc&view=rev
Log:
        PR c/64637
        * c-typeck.c (c_process_expr_stmt): Use location of the expression if
        available.

        * gcc.dg/pr64637.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr64637.c
Modified:
    trunk/gcc/c/ChangeLog
    trunk/gcc/c/c-typeck.c
    trunk/gcc/testsuite/ChangeLog