beginRaw does not check for excessive lengths

[Hackerpilot]

The code for beginRaw currently looks like this:

void beginRaw(in size_t length)
{
    if (length < 32) {
...
    } else if (length < 65536) {
...
    } else {
        const temp = convertEndianTo!32(length);
...
    }
}

The convertEndianTo function does not check for lengths too large to fit in 32 bits, so it's possible to generate invalid MessagePack output with very large byte arrays.

[repeatedly]

Ah, I see. Thanks for pointhing this out!