From 3ed0c4e8097493d233b44a28f10a9ba83300de46 Mon Sep 17 00:00:00 2001
From: Stephen Williams <steve@icarus.com>
Date: Wed, 27 Aug 2008 18:42:05 -0700
Subject: [PATCH] Don't crash looking for delay_type of empty task.

It is legal for a task to have no definition. In that case, the
delay_type calculations (used to detect infinite loops) can assume
that an empty definition is a no-op and return NO_DELAY.
---
 netlist.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/netlist.cc b/netlist.cc
index 51cf898f6..72b5b8e99 100644
--- a/netlist.cc
+++ b/netlist.cc
@@ -2649,6 +2649,7 @@ DelayType NetRepeat::delay_type() const
 
 DelayType NetTaskDef::delay_type() const
 {
+      if (proc_ == 0) return NO_DELAY;
       return proc_->delay_type();
 }