diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1cb0b5c87c1..9388c159ad4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2012-10-02  Alexandre Oliva <aoliva@redhat.com>
+
+	PR debug/53135
+	* dwarf2out.c (value_format): Use block4 for dw_val_class_loc
+	when needed.
+
 2012-10-02  Alexandre Oliva <aoliva@redhat.com>
 
 	PR debug/54177
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index c776f682b85..25f57c06b9c 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -7491,6 +7491,8 @@ value_format (dw_attr_ref a)
 	  return DW_FORM_block1;
 	case 2:
 	  return DW_FORM_block2;
+	case 4:
+	  return DW_FORM_block4;
 	default:
 	  gcc_unreachable ();
 	}