[Bug c/68412] [6 Regression] ICE with -Wall -Wextra in fold_binary_loc()

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68412

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Thu Nov 19 22:04:00 2015
New Revision: 230627

URL: https://gcc.gnu.org/viewcvs?rev=230627&root=gcc&view=rev
Log:
        PR c/68412
        * c-typeck.c (parser_build_binary_op): Properly handle
        C_MAYBE_CONST_EXPR before calling warn_tautological_cmp.

        * gcc.dg/pr68412-2.c: New test.
        * gcc.dg/pr68412.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr68412-2.c
    trunk/gcc/testsuite/gcc.dg/pr68412.c
Modified:
    trunk/gcc/c/ChangeLog
    trunk/gcc/c/c-typeck.c
    trunk/gcc/testsuite/ChangeLog