From: Tobias Oetiker <tobi@oetiker.ch>
Date: Fri, 6 May 2005 15:24:27 +0000 (+0000)
Subject: if stacking on nothing we should not try to figure out WHAT we stacked on since this... 
X-Git-Tag: 1.2.2~13
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1c236fbf97ecebecaa93f3c4ccdc71e2062cdfb6;p=thirdparty%2Frrdtool-1.x.git

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
---

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index a5f87db3..01e174ce 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);