diff -r b83527d0482d -r 15d6977f04b0 src/share/vm/oops/methodOop.cpp
--- a/src/share/vm/oops/methodOop.cpp	Thu Feb 10 12:55:56 2011 +0100
+++ b/src/share/vm/oops/methodOop.cpp	Thu Feb 10 13:03:22 2011 +0100
@@ -1372,7 +1372,7 @@
 }
 
 // See comment in methodOop.hpp which explains why this exists.
-#if defined(_M_AMD64) && MSC_VER >= 1400
+#if defined(_M_AMD64) && _MSC_VER >= 1400
 #pragma optimize("", off)
 void CompressedLineNumberWriteStream::write_pair(int bci, int line) {
   write_pair_inline(bci, line);