X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=src%2Frrd_graph.c;h=01e174ce7cb0ed5fcdf38ed5ede01350a72cd951;hp=a5f87db3ebdeb4798122c307c3f155db38884f1f;hb=db40632e1c55e32f618d14f75a8698d87cc6b974;hpb=8c9833ac130d76de250a2ad12c3e56b9a607a6a1

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);