re PR lto/41821 (ICE in LTO when linking)

2009-10-27  Richard Guenther  <rguenther@suse.de>

	PR lto/41821
	* gimple.c (gimple_types_compatible_p): Handle OFFSET_TYPE.

From-SVN: r153589

gcc/ChangeLog

+2009-10-27  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/41821
+	* gimple.c (gimple_types_compatible_p): Handle OFFSET_TYPE.
+
 2009-10-27  Aldy Hernandez  <aldyh@redhat.com>
 
 	PR bootstrap/41451

gcc/gimple.c

@@ -3198,7 +3198,8 @@ gimple_types_compatible_p (tree t1, tree t2)
       || SCALAR_FLOAT_TYPE_P (t1)
       || FIXED_POINT_TYPE_P (t1)
       || TREE_CODE (t1) == VECTOR_TYPE
-      || TREE_CODE (t1) == COMPLEX_TYPE)
+      || TREE_CODE (t1) == COMPLEX_TYPE
+      || TREE_CODE (t1) == OFFSET_TYPE)
     {
       /* Can't be the same type if they have different alignment,
 	 sign, precision or mode.  */
@@ -3343,6 +3344,16 @@ gimple_types_compatible_p (tree t1, tree t2)
 	    }
 	}
 
+    case OFFSET_TYPE:
+      {
+	if (!gimple_types_compatible_p (TREE_TYPE (t1), TREE_TYPE (t2))
+	    || !gimple_types_compatible_p (TYPE_OFFSET_BASETYPE (t1),
+					   TYPE_OFFSET_BASETYPE (t2)))
+	  goto different_types;
+
+	goto same_types;
+      }
+
     case POINTER_TYPE:
     case REFERENCE_TYPE:
       {