From f2c8fb0479f2f26742feb22bacfce27647d79eb3 Mon Sep 17 00:00:00 2001
From: Maciej Suminski <maciej.suminski@cern.ch>
Date: Fri, 22 Jan 2016 12:10:39 +0100
Subject: [PATCH] vhdlpp: Display an error message when calling a function with
 too many arguments.

---
 vhdlpp/expression_elaborate.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/vhdlpp/expression_elaborate.cc b/vhdlpp/expression_elaborate.cc
index b80d25b9d..69dc36494 100644
--- a/vhdlpp/expression_elaborate.cc
+++ b/vhdlpp/expression_elaborate.cc
@@ -1118,6 +1118,13 @@ int elaborate_argument(Expression*expr, const SubprogramHeader*subp,
     if(subp) {
         const InterfacePort*param = subp->peek_param(idx);
 
+        if(!param) {
+            cerr << expr->get_fileline()
+                 << ": error: Too many arguments when calling "
+                 << subp->name() << "." << endl;
+            return 1;
+        }
+
         // Enable reg_flag for variables that might be modified in subprograms
         if(param->mode == PORT_OUT || param->mode == PORT_INOUT) {
             if(const ExpName*e = dynamic_cast<const ExpName*>(expr)) {