From 53fb873cc2f5a093600f596a547cbd97381c3916 Mon Sep 17 00:00:00 2001
From: Andrey Kiselev <dron@ak4719.spb.edu>
Date: Tue, 17 May 2005 14:18:48 +0000
Subject: [PATCH] Check for JPEGTables tag presence before copying.

---
 tools/tiffsplit.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/tools/tiffsplit.c b/tools/tiffsplit.c
index 66f02c08..3387dee4 100644
--- a/tools/tiffsplit.c
+++ b/tools/tiffsplit.c
@@ -1,4 +1,4 @@
-/* $Id: tiffsplit.c,v 1.9 2004-06-05 08:11:26 dron Exp $ */
+/* $Id: tiffsplit.c,v 1.10 2005-05-17 14:18:48 dron Exp $ */
 
 /*
  * Copyright (c) 1992-1997 Sam Leffler
@@ -151,10 +151,12 @@ tiffcp(TIFF* in, TIFF* out)
 	CopyField(TIFFTAG_SAMPLESPERPIXEL, samplesperpixel);
 	CopyField(TIFFTAG_COMPRESSION, compression);
 	if (compression == COMPRESSION_JPEG) {
-		uint16 count;
-		void *table;
-		TIFFGetField(in, TIFFTAG_JPEGTABLES, &count, &table);
-		TIFFSetField(out, TIFFTAG_JPEGTABLES, count, table);
+		uint16 count = 0;
+		void *table = NULL;
+		if (TIFFGetField(in, TIFFTAG_JPEGTABLES, &count, &table)
+		    && count > 0 && table) {
+		    TIFFSetField(out, TIFFTAG_JPEGTABLES, count, table);
+		}
 	}
         CopyField(TIFFTAG_PHOTOMETRIC, shortv);
 	CopyField(TIFFTAG_PREDICTOR, shortv);