diff -r 82d4e10b7c6b -r d8e6e11e7f32 hotspot/src/cpu/x86/vm/interpreterRT_x86_64.cpp
--- a/hotspot/src/cpu/x86/vm/interpreterRT_x86_64.cpp	Fri Mar 13 18:39:22 2009 -0700
+++ b/hotspot/src/cpu/x86/vm/interpreterRT_x86_64.cpp	Mon Mar 16 15:06:33 2009 -0700
@@ -349,7 +349,7 @@
 
     if (_num_args < Argument::n_float_register_parameters_c-1) {
       *_reg_args++ = from_obj;
-      *_fp_identifiers |= (0x01 << (_num_args*2)); // mark as float
+      *_fp_identifiers |= (intptr_t)(0x01 << (_num_args*2)); // mark as float
       _num_args++;
     } else {
       *_to++ = from_obj;
@@ -364,7 +364,7 @@
 
     if (_num_args < Argument::n_float_register_parameters_c-1) {
       *_reg_args++ = from_obj;
-      *_fp_identifiers |= (0x3 << (_num_args*2)); // mark as double
+      *_fp_identifiers |= (intptr_t)(0x3 << (_num_args*2)); // mark as double
       _num_args++;
     } else {
       *_to++ = from_obj;