[gs-cvs] rev 7825 - trunk/gs/lib

[alexcher at ghostscript.com]

Author: alexcher
Date: 2007-04-05 21:11:00 -0700 (Thu, 05 Apr 2007)
New Revision: 7825

Modified:
   trunk/gs/lib/pdf_draw.ps
Log:
Accept a perfectly valid 0-length pattern stream. Work around a strange
restriction on 0-length target string in the readstring operator.
Fix bug 689162.

DIFFERENCES:
No Comparefiles or CET differences.


Modified: trunk/gs/lib/pdf_draw.ps
===================================================================
--- trunk/gs/lib/pdf_draw.ps	2007-04-06 02:43:19 UTC (rev 7824)
+++ trunk/gs/lib/pdf_draw.ps	2007-04-06 04:11:00 UTC (rev 7825)
@@ -756,7 +756,11 @@
     dup 3 index /Length oget
 
     dup 65535 le {
-      string readstring pop
+      dup 0 eq {
+        pop pop ()
+      } {
+        string readstring pop
+      } ifelse
     } {
       () /SubFileDecode filter /ReusableStreamDecode filter
     } ifelse