Method setMessage

Engine/lib/openal-soft/core/except.cpp:17–27

base_exception::~base_exception() { }

void base_exception::setMessage(const char* msg, std::va_list args)
{
    std::va_list args2;
    va_copy(args2, args);
    int msglen{std::vsnprintf(nullptr, 0, msg, args)};
    if LIKELY(msglen > 0)
    {
        mMessage.resize(static_cast<size_t>(msglen)+1);
        std::vsnprintf(&mMessage[0], mMessage.length(), msg, args2);
        mMessage.pop_back();
    }
    va_end(args2);
}