diff --unified --recursive --text xaos-3.6.orig/src/engine/zoom.c xaos-3.6.new/src/engine/zoom.c
--- xaos-3.6.orig/src/engine/zoom.c	2013-11-01 08:54:21.000000000 +0100
+++ xaos-3.6.new/src/engine/zoom.c	2019-11-03 12:19:31.569988390 +0100
@@ -933,6 +933,7 @@
 }
 
 #ifndef USE_i386ASM
+REGISTERS(0)
 static /*INLINE */ void
 moveoldpoints(void /*@unused@ */ *data1,
 	      struct taskinfo /*@unused@ */ *task,
diff --unified --recursive --text xaos-3.6.orig/src/engine/zoomd.c xaos-3.6.new/src/engine/zoomd.c
--- xaos-3.6.orig/src/engine/zoomd.c	2013-11-01 08:54:21.000000000 +0100
+++ xaos-3.6.new/src/engine/zoomd.c	2019-11-03 12:19:39.910033088 +0100
@@ -280,6 +280,7 @@
 #endif
 #undef bpp1
 
+REGISTERS(0)
 static INLINE void fillline(int line)
 {
     register unsigned char *RESTRICT vbuff = cimage.currlines[line];