--- a/tools/rpcgen/rpc_tblout.c
+++ b/tools/rpcgen/rpc_tblout.c
@@ -82,14 +82,19 @@ write_table (const definition * def)
   proc_list *proc;
   int current;
   int expected;
-  char progvers[100];
+  char *progvers;
   int warning;
+  int a;
 
   for (vp = def->def.pr.versions; vp != NULL; vp = vp->next)
     {
       warning = 0;
-      s_print (progvers, "%s_%s",
+     a = asprintf (&progvers, "%s_%s", 
 	       locase (def->def_name), vp->vers_num);
+     if (a == -1)
+     {
+	     return;
+     }
       /* print the table header */
       f_print (fout, tbl_hdr, progvers);
 
@@ -146,6 +151,7 @@ write_table (const definition * def)
       /* print the table trailer */
       f_print (fout, tbl_end);
       f_print (fout, tbl_nproc, progvers, progvers, progvers);
+      free (progvers);
     }
 }