optabs.c (expand_ffs): Initialize val and defined_at_zero to avoid warnings.

	* optabs.c (expand_ffs): Initialize val and defined_at_zero
	to avoid warnings.

From-SVN: r128058

gcc/ChangeLog

 2007-09-03  Zack Weinberg  <zack@codesourcery.com>
 
+	* optabs.c (expand_ffs): Initialize val and defined_at_zero
+	to avoid warnings.
+
 	* optabs.c: Remove unnecessary forward declarations.
 	(expand_unop_direct): New, broken out of expand_unop.
 	(expand_doubleword_clz): New.

gcc/optabs.c

@@ -2702,8 +2702,8 @@ expand_ctz (enum machine_mode mode, rtx op0, rtx target)
 static rtx
 expand_ffs (enum machine_mode mode, rtx op0, rtx target)
 {
-  HOST_WIDE_INT val;
-  bool defined_at_zero;
+  HOST_WIDE_INT val = 0;
+  bool defined_at_zero = false;
   rtx temp, seq;
 
   if (optab_handler (ctz_optab, mode)->insn_code != CODE_FOR_nothing)