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diff src/share/vm/oops/constMethod.hpp @ 7588:f9eb431c3efe

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8006005: Fix constant pool index validation and alignment trap for method parameter reflection Summary: This patch addresses an alignment trap due to the storage format of method parameters data in constMethod. It also adds code to validate constant pool indexes for method parameters data. Reviewed-by: jrose, dholmes Contributed-by: eric.mccorkle@oracle.com
author coleenp
date Mon, 14 Jan 2013 11:01:39 -0500
parents ade95d680b42
children 16fb9f942703
line wrap: on
line diff
--- a/src/share/vm/oops/constMethod.hpp	Fri Jan 11 09:53:24 2013 -0800
+++ b/src/share/vm/oops/constMethod.hpp	Mon Jan 14 11:01:39 2013 -0500
@@ -122,7 +122,12 @@
 class MethodParametersElement VALUE_OBJ_CLASS_SPEC {
  public:
   u2 name_cp_index;
-  u4 flags;
+  // This has to happen, otherwise it will cause SIGBUS from a
+  // misaligned u4 on some architectures (ie SPARC)
+  // because MethodParametersElements are only aligned mod 2
+  // within the ConstMethod container  u2 flags_hi;
+  u2 flags_hi;
+  u2 flags_lo;
 };