# HG changeset patch
# User dholmes
# Date 1336537725 14400
# Node ID 0a3b759f810905e753feb4623704eec0cc6910e8
# Parent  fb31de03f64984252c33dea9fcda2588d44b8e5e
7167406: (Zero) Fix for InvokeDynamic needed
Reviewed-by: chrisphi, dholmes
Contributed-by: Andrew Dinn <adinn@redhat.com>

diff -r fb31de03f649 -r 0a3b759f8109 hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp
--- a/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp	Mon Mar 19 10:09:24 2012 +0100
+++ b/hotspot/src/cpu/zero/vm/cppInterpreter_zero.cpp	Wed May 09 00:28:45 2012 -0400
@@ -1026,6 +1026,16 @@
         java_lang_invoke_AdapterMethodHandle::vmargslot(method_handle);
       oop arg = VMSLOTS_OBJECT(arg_slot);
       jvalue arg_value;
+      if (arg == NULL) {
+        // queue a nullpointer exception for the caller
+        stack->set_sp(calculate_unwind_sp(stack, method_handle));
+        CALL_VM_NOCHECK_NOFIX(
+          throw_exception(
+            thread, vmSymbols::java_lang_NullPointerException()));
+        // NB all oops trashed!
+        assert(HAS_PENDING_EXCEPTION, "should do");
+        return;
+      }
       BasicType arg_type = java_lang_boxing_object::get_value(arg, &arg_value);
       if (arg_type == T_LONG || arg_type == T_DOUBLE) {
         intptr_t *unwind_sp = calculate_unwind_sp(stack, method_handle);
@@ -1112,6 +1122,15 @@
       case T_SHORT:
         return;
       }
+      // INT results sometimes need narrowing
+    case T_BOOLEAN:
+    case T_CHAR:
+    case T_BYTE:
+    case T_SHORT:
+      switch (src_rtype) {
+      case T_INT:
+        return;
+      }
     }
 
     tty->print_cr("unhandled conversion:");