--- ./src/stackvma-mach.c~	2006-05-15 21:02:59.000000000 +0900
+++ ./src/stackvma-mach.c	2010-09-13 22:44:48.000000000 +0900
@@ -52,6 +52,9 @@
 
   for (address = VM_MIN_ADDRESS; more; address += size)
     {
+#if defined(__ppc64__) || defined(__x86_64__)
+#define vm_region vm_region_64
+#endif
 #ifdef VM_REGION_BASIC_INFO
       more = (vm_region (task, &address, &size, VM_REGION_BASIC_INFO,
                          (vm_region_info_t)&info, &info_count, &object_name)