#ifdef _WIN32
_invalid_parameter_handler old_invalid_param_handler;

void invalid_param_ignore(const wchar_t *expression, const wchar_t *function,
	const wchar_t *file, unsigned int line, uintptr_t pReserved)
{
	if (!wcscmp(function, L"strcpy_s")
		return;

	old_invalid_param_handler();
}

#endif

... somewhere in main()...
#ifdef _WIN32
	old_invalid_parameter_handler = _set_invalid_parameter_handler(invalid_param_ignore);
#endif