2014-10-16  Richard Biener  <rguenther@suse.de>

	PR middle-end/63554
	* builtins.c (fold_builtin_4): Do not call fold_builtin_strncat_chk.
	(fold_builtin_strncat_chk): Move ...
	* gimple-fold.c (gimple_fold_builtin_strncat_chk): ... here.
	(gimple_fold_builtin): Call gimple_fold_builtin_strncat_chk.

	* gcc.dg/torture/pr63554.c: New testcase.

From-SVN: r216315