From db40632e1c55e32f618d14f75a8698d87cc6b974 Mon Sep 17 00:00:00 2001
From: oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Fri, 6 May 2005 15:24:27 +0000
Subject: [PATCH] if stacking on nothing we should not try to figure out WHAT
 we stacked on since this will result in a segfault ... -- Alex van den
 Bogaerdt <alex at ergens.op.het.net>

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@488 a5681a0c-68f1-0310-ab6d-d61299d08faa
---
 src/rrd_graph.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index a5f87db..01e174c 100644
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -2482,7 +2482,7 @@ graph_paint(image_desc_t *im, char ***calcpr)
 		continue;
 	    }
             ytop = ytr(im,im->gdes[i].p_data[ii]);
- 	    if ( im->gdes[i].stack ) {
+ 	    if ( lastgdes && im->gdes[i].stack ) {
                   ybase = ytr(im,lastgdes->p_data[ii]);
             } else {
                   ybase = ytr(im,areazero);
-- 
2.30.2