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changeset 4869:5ed8f599a788

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7140924: SIGSEGV in compiled code for sun.awt.X11.XDecoratedPeer.updateMinSizeHints Summary: Use unknown_obj instead of empty_map for NULL or Constant Pool object constants in bytecode Escape Analyzer. Reviewed-by: iveresov, never
author kvn
date Tue, 31 Jan 2012 07:18:03 -0800
parents 5f17b16b3219
children 2f5980b127e3
files src/share/vm/ci/bcEscapeAnalyzer.cpp
diffstat 1 files changed, 4 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/src/share/vm/ci/bcEscapeAnalyzer.cpp	Mon Jan 30 19:37:14 2012 -0800
+++ b/src/share/vm/ci/bcEscapeAnalyzer.cpp	Tue Jan 31 07:18:03 2012 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2012, Oracle and/or its affiliates. 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
@@ -359,7 +359,7 @@
       case Bytecodes::_nop:
         break;
       case Bytecodes::_aconst_null:
-        state.apush(empty_map);
+        state.apush(unknown_obj);
         break;
       case Bytecodes::_iconst_m1:
       case Bytecodes::_iconst_0:
@@ -392,6 +392,8 @@
         if (tag.is_long() || tag.is_double()) {
           // Only longs and doubles use 2 stack slots.
           state.lpush();
+        } else if (tag.basic_type() == T_OBJECT) {
+          state.apush(unknown_obj);
         } else {
           state.spush();
         }