gcc/ChangeLog:

	PR testsuite/83131
	* builtins.c (expand_builtin_strlen): Use get_callee_fndecl.
	(expand_builtin_strcmp): Call maybe_warn_nonstring_arg.	
	(expand_builtin_strncmp): Same.

gcc/testsuite/ChangeLog:

	PR testsuite/83131
	* c-c++-common/attr-nonstring-4.c: New test.

From-SVN: r255898