From 1ed16b4290c6ec05ca0b70b1b98af7bcbc968124 Mon Sep 17 00:00:00 2001
From: Andrey Kiselev <dron@ak4719.spb.edu>
Date: Thu, 22 Aug 2002 18:31:40 +0000
Subject: [PATCH] Further additions to free custom fields in
 _TIFFSetupFieldInfo() function. See
 http://bugzilla.remotesensing.org/show_bug.cgi?id=169 for details.

---
 libtiff/tif_dirinfo.c | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/libtiff/tif_dirinfo.c b/libtiff/tif_dirinfo.c
index 5a815c1d..fe6fbb92 100644
--- a/libtiff/tif_dirinfo.c
+++ b/libtiff/tif_dirinfo.c
@@ -1,4 +1,4 @@
-/* $Header: /cvs/maptools/cvsroot/libtiff/libtiff/tif_dirinfo.c,v 1.18 2002-08-15 12:59:50 warmerda Exp $ */
+/* $Header: /cvs/maptools/cvsroot/libtiff/libtiff/tif_dirinfo.c,v 1.19 2002-08-22 18:31:40 dron Exp $ */
 
 /*
  * Copyright (c) 1988-1997 Sam Leffler
@@ -280,6 +280,19 @@ void
 _TIFFSetupFieldInfo(TIFF* tif)
 {
 	if (tif->tif_fieldinfo) {
+        	int  i;
+
+        	for (i = 0; i < tif->tif_nfields; i++) 
+		{
+	    		TIFFFieldInfo *fld = tif->tif_fieldinfo[i];
+ 	    		if (fld->field_bit == FIELD_CUSTOM && 
+				strncmp("Tag ", fld->field_name, 4) == 0) 
+	    			{
+				_TIFFfree(fld->field_name);
+                		_TIFFfree(fld);
+	    			}
+        	}   
+      
 		_TIFFfree(tif->tif_fieldinfo);
 		tif->tif_nfields = 0;
 	}
@@ -464,7 +477,9 @@ _TIFFCreateAnonFieldInfo(TIFF *tif, ttag_t tag, TIFFDataType field_type)
     fld->field_passcount = TRUE;
     fld->field_name = (char *) _TIFFmalloc(32);
 
-    /* note that this name is a special sign to TIFFClose() to free the field*/
+    /* note that this name is a special sign to TIFFClose() and
+     * _TIFFSetupFieldInfo() to free the field
+     */
     sprintf(fld->field_name, "Tag %d", (int) tag);
 
     return fld;