It happens when .onLine XML tags don't have a leading >
For example, I tried:
RTBCC_Socket::onLine(7076, "<bo");
And got this:
Entering RTBCC_Socket::onLine(7076, <bo)
Entering XMLParser::bufferData(7077, <bo)
Then an infinite loop of just this:
getSubStr(...): error, starting position and desired length must be >= 0: ("<bo",1, -2)
BackTrace: ->ConsoleEntry::eval->RTBCC_Socket::onLine->XMLParser::bufferData
I wasn't however, able to get this crash to happen like I normally do. Only when forcing it a line.