r218395 - in /trunk/gcc: ChangeLog fold-const.c...

[mpolacek@gcc.gnu.org]

Author: mpolacek
Date: Thu Dec  4 19:20:12 2014
New Revision: 218395

URL: https://gcc.gnu.org/viewcvs?rev=218395&root=gcc&view=rev
Log:
	PR middle-end/56917
	* fold-const.c (fold_unary_loc): Perform the negation in A's type
	when transforming ~ (A - 1) or ~ (A + -1) to -A.

	* c-c++-common/ubsan/pr56917.c: New test.

Added:
    trunk/gcc/testsuite/c-c++-common/ubsan/pr56917.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog