From 6e413bfdd257393d3881901364c08a657c3f2b34 Mon Sep 17 00:00:00 2001
From: Emden Gansner <erg@research.att.com>
Date: Tue, 6 Sep 2011 17:12:37 -0400
Subject: [PATCH] Flush image cache if the image path variable changes.

---
 lib/gvc/gvusershape.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/lib/gvc/gvusershape.c b/lib/gvc/gvusershape.c
index 4f112b6e6..f69f971d3 100644
--- a/lib/gvc/gvusershape.c
+++ b/lib/gvc/gvusershape.c
@@ -28,7 +28,8 @@
 #include "utils.h"
 #include "gvplugin_loadimage.h"
 
-
+extern char *Gvimagepath;
+extern char *HTTPServerEnVar;
 extern shape_desc *find_user_shape(const char *);
 
 static Dict_t *ImageDict;
@@ -477,6 +478,7 @@ point gvusershape_size(graph_t * g, char *name)
 {
     point rv;
     pointf dpi;
+    static char* oldpath;
 
     /* no shape file, no shape size */
     if (!name || (*name == '\0')) {
@@ -484,6 +486,14 @@ point gvusershape_size(graph_t * g, char *name)
 	return rv;
     }
 
+    if (!HTTPServerEnVar && strcmp(oldpath,Gvimagepath)) {
+	oldpath = Gvimagepath;
+	if (ImageDict) {
+	    dtclose(ImageDict);
+	    ImageDict = NULL;
+	}
+    }
+
     if ((dpi.y = GD_drawing(g)->dpi) >= 1.0)
 	dpi.x = dpi.y;
     else
-- 
2.40.0