From: Thomas Geymayer <tomgey@gmail.com>
Date: Sat, 19 Oct 2013 23:26:32 +0000 (+0200)
Subject: Trigger segfault/stacktrace to trace memory corruption.
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=e4b8e1ea070926f088cca9d6502ace36b5fe782c;p=flightgear.git

Trigger segfault/stacktrace to trace memory corruption.

Catch OSG error message if osg::Reference derived class
is deleted with non-zero reference count and trigger a
segfault to get a stack trace.
---

diff --git a/src/Viewer/fg_os_osgviewer.cxx b/src/Viewer/fg_os_osgviewer.cxx
index ffe10c0e0..9a73847dc 100644
--- a/src/Viewer/fg_os_osgviewer.cxx
+++ b/src/Viewer/fg_os_osgviewer.cxx
@@ -190,6 +190,15 @@ public:
   virtual void notify(osg::NotifySeverity severity, const char *message)
   {
     SG_LOG(SG_GL, translateSeverity(severity), message);
+
+    // Detect whether a osg::Reference derived object is deleted with a non-zero
+    // reference count. In this case trigger a segfault to get a stack trace.
+    if( strstr(message, "the final reference count was") )
+    {
+
+      int* trigger_segfault = 0;
+      *trigger_segfault = 0;
+    }
   }
   
 private: