From 3de4c2956539a4251b65b88bff477d5866e98510 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Thu, 17 Apr 2014 11:20:13 -0400
Subject: [PATCH] cmake: Print C++ stack trace after INTERNAL_ERROR messages

Since an INTERNAL_ERROR is always a bug, it will be useful to have the
program stack trace available in the report.
---
 Source/cmake.cxx | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Source/cmake.cxx b/Source/cmake.cxx
index 71ea3f51f..7aada4b6a 100644
--- a/Source/cmake.cxx
+++ b/Source/cmake.cxx
@@ -24,6 +24,7 @@
 #if defined(CMAKE_BUILD_WITH_CMAKE)
 # include "cmGraphVizWriter.h"
 # include "cmVariableWatch.h"
+# include <cmsys/SystemInformation.hxx>
 #endif
 
 #include <cmsys/Glob.hxx>
@@ -2601,6 +2602,22 @@ void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
   // Add a terminating blank line.
   msg << "\n";
 
+#if defined(CMAKE_BUILD_WITH_CMAKE)
+  // Add a C++ stack trace to internal errors.
+  if(t == cmake::INTERNAL_ERROR)
+    {
+    std::string stack = cmsys::SystemInformation::GetProgramStack(0,0);
+    if(!stack.empty())
+      {
+      if(cmHasLiteralPrefix(stack, "WARNING:"))
+        {
+        stack = "Note:" + stack.substr(8);
+        }
+      msg << stack << "\n";
+      }
+    }
+#endif
+
   // Output the message.
   if(isError)
     {