定义变参函数时,参数必须用基础类型,如果用std::string会出现莫名错误,原因未知,例如
void CTest::test(const std::string& msg, ...) {va_list argList;CHAR szBuffer[1024] = {0};va_start(argList, msg); // 此处argList解析到的为错误内容vsprintf_s(szBuffer, 1024, msg, argList);va_end(argList);std::cout << szBuffer << std::endl; }void CTest::test(const char* msg, ...) {va_list argList;char szBuffer[1024] = {0};va_start(argList, msg); // OK,此处解析正确vsprintf_s(szBuffer, 1024, msg, argList);va_end(argList);std::cout << szBuffer << std::endl; }