r193591 - in /trunk/gcc: ChangeLog fold-const.c...

Sat Nov 17 22:00:00 GMT 2012

Author: jakub
Date: Sat Nov 17 22:00:32 2012
New Revision: 193591

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193591
Log:
	PR tree-optimization/55236
	* fold-const.c (make_range_step) <case NEGATE_EXPR>: For -fwrapv
	and signed ARG0_TYPE, force low and high to be non-NULL.

	* gcc.dg/pr55236.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr55236.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog