--- a/hotspot/make/solaris/makefiles/fastdebug.make	Mon Jul 23 14:28:38 2012 -0700
+++ b/hotspot/make/solaris/makefiles/fastdebug.make	Thu Jul 26 17:24:31 2012 -0400
@@ -36,6 +36,11 @@
 ifeq ("${Platform_compiler}", "sparcWorks")
 OPT_CFLAGS/SLOWER = -xO2
 
+ifeq ($(COMPILER_REV_NUMERIC), 510)
+# CC 5.10 has bug XXXXX with -xO4
+OPT_CFLAGS/jvmtiClassFileReconstituter.o = $(OPT_CFLAGS/SLOWER)
+endif # COMPILER_REV_NUMERIC == 510
+
 ifeq ($(COMPILER_REV_NUMERIC), 509)
 # To avoid jvm98 crash
 OPT_CFLAGS/instanceKlass.o = $(OPT_CFLAGS/SLOWER)