Function Filter

src/crashHandler/crashHandler.cpp:95–124

if you use C++ exception handling: install a translator function with set_se_translator(). In the context of that function (but *not afterwards), you can either do your stack dump, or save the CONTEXT record as a local copy. Note that you must do the stack dump at the earliest opportunity, to avoid the interesting stack-frames being gone by the time you do the dump.

// earliest opportunity, to avoid the interesting stack-frames being gone
// by the time you do the dump.
LONG WINAPI Filter(EXCEPTION_POINTERS *ep) {
	HANDLE thread;

	std::string dumpFilePath;
	{
		char tempPath[MAX_PATH];
		GetTempPathA(MAX_PATH, tempPath);
		dumpFilePath = std::string(tempPath) + "aliasIsolationCrashDump.dmp";
	}

	const bool dumpWritten = WriteFullDump(GetCurrentProcess(), ep, dumpFilePath.c_str());

	DuplicateHandle(GetCurrentProcess(), GetCurrentThread(),
		GetCurrentProcess(), &thread, 0, false, DUPLICATE_SAME_ACCESS);

	std::stringstream stackTrace;

	stackTrace << "A fatal error was caught by Alias Isolation, and the current process will terminate.\n";
	if (dumpWritten) {
		stackTrace << "A crash dump has been written to " << dumpFilePath << ".\n";
	}
	stackTrace << "Press Ctrl+C to copy the contents of this message to the clipboard.\n\n";

	show_stack(stackTrace, thread, *(ep->ContextRecord));
	CloseHandle(thread);

	MessageBoxA(NULL, stackTrace.str().c_str(), "Fatal error", MB_ICONEXCLAMATION);

	return EXCEPTION_EXECUTE_HANDLER;
}

class SymHandler { 
	HANDLE p;