diff -Naur gnucap-0.35/src/plot.cc gnucap-0.35-p/src/plot.cc
--- gnucap-0.35/src/plot.cc	2006-08-28 08:15:43.000000000 +0200
+++ gnucap-0.35-p/src/plot.cc	2016-12-12 19:15:42.445377548 +0100
@@ -230,7 +230,7 @@
 	double yhi,
 	double zhi)
 {
-  auto char adata[MAXWIDTH+1];     /* actual data. copy emptydata, insert */
+  char adata[MAXWIDTH+1];     /* actual data. copy emptydata, insert */
   char *xxs;				     /* string representation of xx */
   memcpy(adata, emptydata, MAXWIDTH); /* copy prototype */
   xxs = ftos( xx, 11, 5, IO::formaat );