# HG changeset patch
# User kvn
# Date 1270582692 25200
# Node ID 3d044c97c2986778ea81aa56dabd6d4c30513c22
# Parent  9ce102c4501acf295056f56f85a6cc7d3539ef35
6894807: No ClassCastException for HashAttributeSet constructors if run with -Xcomp
Summary: Return interface klass type if it is exact.
Reviewed-by: never

diff -r 9ce102c4501a -r 3d044c97c298 src/share/vm/opto/cfgnode.cpp
--- a/src/share/vm/opto/cfgnode.cpp	Tue Apr 06 13:58:19 2010 -0700
+++ b/src/share/vm/opto/cfgnode.cpp	Tue Apr 06 12:38:12 2010 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright 1997-2009 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 1997-2010 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -956,6 +956,7 @@
     }
     if( jtkp && ttkp ) {
       if( jtkp->is_loaded() &&  jtkp->klass()->is_interface() &&
+          !jtkp->klass_is_exact() && // Keep exact interface klass (6894807)
           ttkp->is_loaded() && !ttkp->klass()->is_interface() ) {
         assert(ft == ttkp->cast_to_ptr_type(jtkp->ptr()) ||
                ft->isa_narrowoop() && ft->make_ptr() == ttkp->cast_to_ptr_type(jtkp->ptr()), "");
diff -r 9ce102c4501a -r 3d044c97c298 src/share/vm/opto/type.cpp
--- a/src/share/vm/opto/type.cpp	Tue Apr 06 13:58:19 2010 -0700
+++ b/src/share/vm/opto/type.cpp	Tue Apr 06 12:38:12 2010 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright 1997-2009 Sun Microsystems, Inc.  All Rights Reserved.
+ * Copyright 1997-2010 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -2545,10 +2545,14 @@
       ftip->is_loaded() &&  ftip->klass()->is_interface() &&
       ktip->is_loaded() && !ktip->klass()->is_interface()) {
     // Happens in a CTW of rt.jar, 320-341, no extra flags
+    assert(!ftip->klass_is_exact(), "interface could not be exact");
     return ktip->cast_to_ptr_type(ftip->ptr());
   }
+  // Interface klass type could be exact in opposite to interface type,
+  // return it here instead of incorrect Constant ptr J/L/Object (6894807).
   if (ftkp != NULL && ktkp != NULL &&
       ftkp->is_loaded() &&  ftkp->klass()->is_interface() &&
+      !ftkp->klass_is_exact() && // Keep exact interface klass
       ktkp->is_loaded() && !ktkp->klass()->is_interface()) {
     // Happens in a CTW of rt.jar, 320-341, no extra flags
     return ktkp->cast_to_ptr_type(ftkp->ptr());