From 63a549a3b237c9f723893a272785633e14a2536f Mon Sep 17 00:00:00 2001
From: John Cupitt <jcupitt@gmail.com>
Date: Sat, 18 Jul 2020 11:59:42 +0100
Subject: [PATCH] Ugly hack to hide the GPSVersionID bug

see https://github.com/libvips/libvips/issues/394
---
 libvips/foreign/exif.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libvips/foreign/exif.c b/libvips/foreign/exif.c
index 3dc35ec5..3727af04 100644
--- a/libvips/foreign/exif.c
+++ b/libvips/foreign/exif.c
@@ -1204,7 +1204,11 @@ vips_exif_image_field( VipsImage *image,
 		return( NULL ); 
 	}
 
-	if( !(tag = exif_tag_from_name( p + 1 )) ) {
+	/* GPSVersionID is tag 0 (the error return) so we have to
+	 * test the name too.
+	 */
+	if( !(tag = exif_tag_from_name( p + 1 )) &&
+		strcmp( p + 1, "GPSVersionID" ) != 0 ) {
 		g_warning( _( "bad exif meta \"%s\"" ), field );
 		return( NULL ); 
 	}