stuff

TODO

@@ -2,6 +2,9 @@
 
   split prepare, generate etc. out to another chapter, maybe generate.h
 
+  man page for im_demand_hint() has some nice notes on SMALLTILE etc we could
+  paste into the VipsDemandStyle comment
+
 
 - VipsFormat next? where should we document the im_vip2jpeg() options?
 

libvips/format/im_magick2vips.c

@@ -617,6 +617,7 @@ im_magick2vips( const char *filename, IMAGE *im )
 
 	if( parse_header( read ) ||
 		im_poutcheck( im ) || 
+		im_demand_hint( im, IM_SMALLTILE, NULL ) || 
 		im_generate( im, NULL, magick_fill_region, NULL, read, NULL ) )
 		return( -1 );
 

libvips/iofuncs/im_open.c

@@ -260,7 +260,8 @@ open_lazy( OpenLazyFn read_header, OpenLazyFn read_pixels,
 	lazy->read_pixels = read_pixels;
 	lazy->lazy_im = NULL;
 
-	if( read_header( filename, out ) )
+	if( read_header( filename, out ) ||
+		im_demand_hint( out, IM_ANY, NULL ) )
 		return( -1 );
 
 	if( im_generate( out,