Added a basic stacktracing for assert and signal failures.

src/OSSupport/StackTrace.cpp

@@ -0,0 +1,43 @@
+
+// StackTrace.cpp
+
+// Implements the functions to print current stack traces
+
+#include "Globals.h"
+#include "StackTrace.h"
+#ifdef _WIN32
+	#include "../StackWalker.h"
+#else
+	#include <execinfo.h>
+#endif
+
+
+
+
+
+void PrintStackTrace(void)
+{
+	#ifdef _WIN32
+		// Reuse the StackWalker from the LeakFinder project already bound to MCS
+		// Define a subclass of the StackWalker that outputs everything to stdout
+		class PrintingStackWalker :
+			public StackWalker
+		{
+			virtual void OnOutput(LPCSTR szText) override
+			{
+				puts(szText);
+			}
+		} sw;
+		sw.ShowCallstack();
+	#else
+		// Use the backtrace() function to get and output the stackTrace:
+		// Code adapted from http://stackoverflow.com/questions/77005/how-to-generate-a-stacktrace-when-my-gcc-c-app-crashes
+		void * stackTrace[30];
+		size_t numItems = backtrace(stackTrace, ARRAYCOUNT(stackTrace));
+		backtrace_symbols_fd(stackTrace, numItems, STDERR_FILENO);
+	#endif
+}
+
+
+
+