diff -up gnucap-0.35/src/plot.cc~ gnucap-0.35/src/plot.cc

--- gnucap-0.35/src/plot.cc~	2016-04-26 09:16:25.000000000 +0200

+++ gnucap-0.35/src/plot.cc	2016-04-26 09:18:43.392162278 +0200

@@ -231,9 +231,9 @@ static void plotarg(

 	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 */

+  memcpy(adata, emptydata, MAXWIDTH + 1); /* copy prototype */

   xxs = ftos( xx, 11, 5, IO::formaat );

   if (zz != NOT_VALID) {

     adata[point(zz,zlo,zhi,CONSSCALE,0,1)] = '+';/* zap data into string */