PR 23604
	* tree-vrp.c (extract_range_from_assert): For !=
	assertions, only build an anti-range if LIMIT is a
	single-valued range.

testsuite/

	PR 23604
	* gcc.c-torture/execute/pr23604.c: New test.

Co-Authored-By: Diego Novillo <dnovillo@redhat.com>

From-SVN: r104858