Index: /trunk/source/lisp-kernel/x86-exceptions.c
===================================================================
--- /trunk/source/lisp-kernel/x86-exceptions.c	(revision 12769)
+++ /trunk/source/lisp-kernel/x86-exceptions.c	(revision 12770)
@@ -2268,5 +2268,5 @@
   case 0x77: return ID_branch_around_alloc_trap_instruction;
   case 0x48: return ID_set_allocptr_header_instruction;
-#ifdef WINDOWS
+#ifdef TCR_IN_GPR
   case 0x41: return ID_clear_tcr_save_allocptr_tag_instruction;
   case 0x49: