From 46c6442ce26edecb3827044e3dd0f7834f682faa Mon Sep 17 00:00:00 2001
From: Bill Hoffman <bill.hoffman@kitware.com>
Date: Tue, 3 Oct 2006 10:57:31 -0400
Subject: [PATCH] BUG: fix for seg fault bug #3815

---
 Source/cmMacroCommand.cxx | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Source/cmMacroCommand.cxx b/Source/cmMacroCommand.cxx
index e4de342be..cb0b7bd36 100644
--- a/Source/cmMacroCommand.cxx
+++ b/Source/cmMacroCommand.cxx
@@ -235,6 +235,10 @@ bool cmMacroHelperCommand::InvokeInitialPass
       }
     if(!this->Makefile->ExecuteCommand(newLFF))
       {
+      if(!args[0].FilePath)
+        {
+        args[0].FilePath = "Unknown";
+        }
       cmOStringStream error;
       error << "Error in cmake code at\n"
             << args[0].FilePath << ":" << args[0].Line << ":\n"