Index: programs/Xserver/fb/fbcompose.c
===================================================================
RCS file: /work/cvsdir/cvs/xc/programs/Xserver/fb/fbcompose.c,v
retrieving revision 1.1.1.16
diff -u -r1.1.1.16 programs/Xserver/fb/fbcompose.c
--- programs/Xserver/fb/fbcompose.c	23 Jan 2006 11:13:59 -0000	1.1.1.16
+++ programs/Xserver/fb/fbcompose.c	20 Mar 2006 16:56:50 -0000
@@ -2610,6 +2610,7 @@
     fetchPixelProc fetch = fetchPixelProcForPicture(pict);
     miIndexedPtr indexed = (miIndexedPtr) pict->pFormat->index.devPrivate;
 
+    if (!fetch) return;
     fbGetDrawable (pict->pDrawable, bits, stride, bpp, xoff, yoff);
     bits += yoff*stride + (xoff*bpp >> FB_SHIFT);
 
@@ -2627,6 +2628,8 @@
     int bpp;
     int xoff, yoff;
     fetchProc fetch = fetchProcForPicture(pict);
+    if (!fetch)
+	return;
     miIndexedPtr indexed = (miIndexedPtr) pict->pFormat->index.devPrivate;
 
     fbGetDrawable (pict->pDrawable, bits, stride, bpp, xoff, yoff);
@@ -2871,6 +2874,7 @@
 
     fetch = fetchPixelProcForPicture(pict);
 
+    if (!fetch) return;
     fbGetDrawable(pict->pDrawable, bits, stride, bpp, xoff, yoff);
     x += xoff;
     y += yoff;
@@ -3340,6 +3344,7 @@
     int bpp;
     int xoff, yoff;
     storeProc store = storeProcForPicture(pict);
+    if (!store) return;
     miIndexedPtr indexed = (miIndexedPtr) pict->pFormat->index.devPrivate;
 
     fbGetDrawable (pict->pDrawable, bits, stride, bpp, xoff, yoff);
@@ -3369,6 +3374,7 @@
 
     store = storeProcForPicture(pict);
     astore = storeProcForPicture(pict->alphaMap);
+    if (!store || !astore) return;
     aindexed = (miIndexedPtr) pict->alphaMap->pFormat->index.devPrivate;
 
     ax = x;