[Bug c++/67980] left shift count is negative [-Wshift-count-negative] generated for unreachable code

[paolo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67980

--- Comment #6 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Fri Nov  4 18:58:53 2016
New Revision: 241858

URL: https://gcc.gnu.org/viewcvs?rev=241858&root=gcc&view=rev
Log:
/cp
2016-11-04  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/67980
        * pt.c (tsubst_expr, case IF_STMT): Use fold_non_dependent_expr
        to suppress unwanted warnings.

/testsuite
2016-11-04  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/67980
        * g++.dg/cpp1y/pr67980.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/cpp1y/pr67980.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog