From a0e273fdca741b8805e19deeb8019fa42c4e64ba Mon Sep 17 00:00:00 2001
From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
Date: Sat, 5 Jan 2019 13:56:09 -0600
Subject: [PATCH] Fix tiff2ps error regarding "Inconsistent value of es" by
 allowing es to be zero. Problem was reported to the tiff mailing list by
 Julian H. Stacey on January 5, 2019.

---
 tools/tiff2ps.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/tiff2ps.c b/tools/tiff2ps.c
index d8d3da3a..5660a68b 100644
--- a/tools/tiff2ps.c
+++ b/tools/tiff2ps.c
@@ -2444,9 +2444,9 @@ PSDataColorContig(FILE* fd, TIFF* tif, uint32 w, uint32 h, int nc)
 	unsigned char *cp, c;
 
 	(void) w;
-        if( es <= 0 )
+        if( es < 0 )
         {
-            TIFFError(filename, "Inconsistent value of es: %d", es);
+            TIFFError(filename, "Inconsistent value of es: %d (samplesperpixel=%u, nc=%d)", es, samplesperpixel, nc);
             return;
         }
 	tf_buf = (unsigned char *) _TIFFmalloc(tf_bytesperrow);