[gs-cvs] rev 8428 - trunk/gs/src

[alexcher at ghostscript.com]

Author: alexcher
Date: 2007-12-08 22:33:00 -0800 (Sat, 08 Dec 2007)
New Revision: 8428

Modified:
   trunk/gs/src/seexec.c
Log:
Use a smaller buffer for eexecDecode filter to avoid consumption of the data
that follow a short (and incorrect) run of 0's in PS files generated by
Adobe Acrobat from PDF files with usage restrictions. Bug 689577

DETAILS:
The buffer size of 132 has been selected from a middle of small window that
fixes the bug but doesn't cause regession in comparefiles/fonttest.pdf.
Detection of EOF after seing a run of 0's is worth to note as an alternative.

DIFFERENCES:
None.

Modified: trunk/gs/src/seexec.c
===================================================================
--- trunk/gs/src/seexec.c	2007-12-08 13:57:53 UTC (rev 8427)
+++ trunk/gs/src/seexec.c	2007-12-09 06:33:00 UTC (rev 8428)
@@ -215,8 +215,10 @@
  * so that it will stay under the limit even after adding min_in_size
  * for a subsequent filter in a pipeline.  Note that we have to specify
  * a size of at least 128 so that filter_read won't round it up.
+ * The value of 132 is samll enough for the sample file of the bug 689577 but
+ * still sufficient for comparefiles/fonttest.pdf .
  */
 const stream_template s_exD_template = {
-    &st_exD_state, s_exD_init, s_exD_process, 8, 200,
+    &st_exD_state, s_exD_init, s_exD_process, 8, 132,
     NULL, s_exD_set_defaults
 };