re PR other/58712 (issues found by --enable-checking=valgrind)

	PR other/58712
	* builtins.c (determine_block_size): Initialize *probable_max_size
	even if len_rtx is CONST_INT.

From-SVN: r206621

gcc/ChangeLog

+2014-01-15  Jakub Jelinek  <jakub@redhat.com>
+
+	PR other/58712
+	* builtins.c (determine_block_size): Initialize *probable_max_size
+	even if len_rtx is CONST_INT.
+
 2014-01-14  Andrew Pinski  <apinski@cavium.com>
 
 	* config/aarch64/aarch64-protos.h (tune_params): Add issue_rate.

gcc/builtins.c

@@ -3117,7 +3117,7 @@ determine_block_size (tree len, rtx len_rtx,
 {
   if (CONST_INT_P (len_rtx))
     {
-      *min_size = *max_size = UINTVAL (len_rtx);
+      *min_size = *max_size = *probable_max_size = UINTVAL (len_rtx);
       return;
     }
   else
@@ -3131,7 +3131,8 @@ determine_block_size (tree len, rtx len_rtx,
       else
 	*min_size = 0;
       if (tree_fits_uhwi_p (TYPE_MAX_VALUE (TREE_TYPE (len))))
-	*probable_max_size = *max_size = tree_to_uhwi (TYPE_MAX_VALUE (TREE_TYPE (len)));
+	*probable_max_size = *max_size
+	  = tree_to_uhwi (TYPE_MAX_VALUE (TREE_TYPE (len)));
       else
 	*probable_max_size = *max_size = GET_MODE_MASK (GET_MODE (len_rtx));