--- a/hotspot/src/share/vm/opto/type.cpp	Mon Sep 15 09:58:26 2008 -0700
+++ b/hotspot/src/share/vm/opto/type.cpp	Wed Sep 17 08:29:17 2008 -0700
@@ -3157,17 +3157,18 @@
 
 // Narrow the given size type to the index range for the given array base type.
 // Return NULL if the resulting int type becomes empty.
-const TypeInt* TypeAryPtr::narrow_size_type(const TypeInt* size, BasicType elem) {
+const TypeInt* TypeAryPtr::narrow_size_type(const TypeInt* size) const {
   jint hi = size->_hi;
   jint lo = size->_lo;
   jint min_lo = 0;
-  jint max_hi = max_array_length(elem);
+  jint max_hi = max_array_length(elem()->basic_type());
   //if (index_not_size)  --max_hi;     // type of a valid array index, FTR
   bool chg = false;
   if (lo < min_lo) { lo = min_lo; chg = true; }
   if (hi > max_hi) { hi = max_hi; chg = true; }
+  // Negative length arrays will produce weird intermediate dead fath-path code
   if (lo > hi)
-    return NULL;
+    return TypeInt::ZERO;
   if (!chg)
     return size;
   return TypeInt::make(lo, hi, Type::WidenMin);
@@ -3176,9 +3177,7 @@
 //-------------------------------cast_to_size----------------------------------
 const TypeAryPtr* TypeAryPtr::cast_to_size(const TypeInt* new_size) const {
   assert(new_size != NULL, "");
-  new_size = narrow_size_type(new_size, elem()->basic_type());
-  if (new_size == NULL)       // Negative length arrays will produce weird
-    new_size = TypeInt::ZERO; // intermediate dead fast-path goo
+  new_size = narrow_size_type(new_size);
   if (new_size == size())  return this;
   const TypeAry* new_ary = TypeAry::make(elem(), new_size);
   return make(ptr(), const_oop(), new_ary, klass(), klass_is_exact(), _offset, _instance_id);