[gs-cvs] rev 7798 - trunk/gs/src

[alexcher at ghostscript.com]

Author: alexcher
Date: 2007-03-24 21:18:56 -0700 (Sat, 24 Mar 2007)
New Revision: 7798

Modified:
   trunk/gs/src/scfd.c
Log:
Clear a Valgrind warning. Initialize a buffer overshot area in CCITTFaxDecode
filter. Bug 688905.

DIFFERENCES:
No CET or Comparefiles differences.


Modified: trunk/gs/src/scfd.c
===================================================================
--- trunk/gs/src/scfd.c	2007-03-24 17:28:22 UTC (rev 7797)
+++ trunk/gs/src/scfd.c	2007-03-25 04:18:56 UTC (rev 7798)
@@ -46,7 +46,7 @@
     /* Because skip_white_pixels can look as many as 4 bytes ahead, */
     /* we need to allow 4 extra bytes at the end of the row buffers. */
     ss->lbuf = gs_alloc_bytes(st->memory, raster + 4, "CFD lbuf");
-    memset(ss->lbuf, white, raster);
+    memset(ss->lbuf, white, raster + 4);  /* + 4 for Valgrind */
     ss->lprev = 0;
     if (ss->lbuf == 0)
 	return ERRC;		/****** WRONG ******/
@@ -55,7 +55,7 @@
 	if (ss->lprev == 0)
 	    return ERRC;	/****** WRONG ******/
 	/* Clear the initial reference line for 2-D encoding. */
-	memset(ss->lprev, white, raster);
+	memset(ss->lprev, white, raster + 4); /* + 4 for Valgrind */
 	/* Ensure that the scan of the reference line will stop. */
 	ss->lprev[raster] = 0xa0;
     }