diff -r 950ed41429e5 -r 3b01d0321dfa src/os/windows/vm/decoder_windows.cpp
--- a/src/os/windows/vm/decoder_windows.cpp	Thu Jul 19 06:24:46 2012 -0700
+++ b/src/os/windows/vm/decoder_windows.cpp	Mon Jul 30 10:25:52 2012 -0400
@@ -72,10 +72,10 @@
 
      // find out if jvm.dll contains private symbols, by decoding
      // current function and comparing the result
-     address addr = (address)Decoder::decode;
+     address addr = (address)Decoder::demangle;
      char buf[MAX_PATH];
      if (decode(addr, buf, sizeof(buf), NULL)) {
-       _can_decode_in_vm = !strcmp(buf, "Decoder::decode");
+       _can_decode_in_vm = !strcmp(buf, "Decoder::demangle");
      }
   }
 }