Q_ASSERT in qv4vme_moth.cpp fails and causes crash. There are not much information or example being provided yet (to be updated when more information is available). Here are what we know so far:
1. The assertion that fails is:
Q_ASSERT(slot < CallData::HeaderSize() / sizeof(QV4::StaticValue)
+ frame->jsFrame->argc()
+ frame->v4Function->compiledFunction->nRegisters);

2. It is a Javascript overflow.
3. Slot is 0, which is very skeptical.
4. It only happens during the first run of a freshly-new built program.

A full trace back is attached.