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author	jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
	Fri, 1 Feb 2013 13:58:55 +0000 (13:58 +0000)
committer	jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
	Fri, 1 Feb 2013 13:58:55 +0000 (13:58 +0000)
commit	f7514a69a3768396d2901355080fc4b7f2edb6e0
tree	db09b9b1a624daa938bad329c84d39054f9eba9f	tree \| snapshot
parent	9697a5198a68b561e85481ed2863ed0712b3304f	commit \| diff

Backported from mainline
2012-11-17 Jakub Jelinek <jakub@redhat.com>

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.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_7-branch@195649 138bc75d-0d04-0410-961f-82ee72b054a4

gcc/ChangeLog		diff \| blob \| history
gcc/fold-const.c		diff \| blob \| history
gcc/testsuite/ChangeLog		diff \| blob \| history
gcc/testsuite/gcc.dg/pr55236.c	[new file with mode: 0644]	blob

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