Dump the stacktrace on SIGSEGV to std::cerr

radiantcore/Radiant.cpp

@@ -13,12 +13,43 @@
 #include "messagebus/MessageBus.h"
 #include "settings/LanguageManager.h"
 
+#ifdef POSIX
+#include <execinfo.h>
+#include <signal.h>
+#endif
+
 namespace radiant
 {
 
 namespace
 {
 	const char* const TIME_FMT = "%Y-%m-%d %H:%M:%S";
+
+    void sigsegv_handler(int sig)
+    {
+        rError() << "SIGSEGV signal caught: " << sig << std::endl;
+        std::cerr << "SIGSEGV signal caught: " << sig << std::endl;
+
+        void* buffer[100];
+        int numAddresses = backtrace(buffer, sizeof(buffer));
+        printf("backtrace() returned %d addresses\n", numAddresses);
+
+        char** strings = backtrace_symbols(buffer, numAddresses);
+
+        if (strings == nullptr)
+        {
+            std::cerr << "backtrace() returned nullptr" << std::endl;
+            exit(EXIT_FAILURE);
+        }
+
+        for (int j = 0; j < numAddresses; j++)
+        {
+            std::cerr << j << "j: " << strings[j] << std::endl;
+        }
+
+        free(strings);
+        exit(1);
+    }
 }
 
 Radiant::Radiant(IApplicationContext& context) :
@@ -35,6 +66,10 @@ Radiant::Radiant(IApplicationContext& context) :
 	// Attach the logfile to the logwriter
 	createLogFile();
 
+#ifdef POSIX
+	signal(SIGSEGV, sigsegv_handler);
+#endif
+
 	_moduleRegistry.reset(new module::ModuleRegistry(_context));
 
 	_languageManager.reset(new language::LanguageManager);