[Bug c++/68979] [6 Regression] error: left operand of shift expression ‘(-1 << 4)’ is negative

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68979

--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Tue Jan 12 16:48:29 2016
New Revision: 232280

URL: https://gcc.gnu.org/viewcvs?rev=232280&root=gcc&view=rev
Log:
        PR c++/68979
        * constexpr.c (cxx_eval_check_shift_p): Use permerror rather than
        error_at and adjust the return value.

        * g++.dg/warn/permissive-1.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/warn/permissive-1.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/constexpr.c
    trunk/gcc/testsuite/ChangeLog