STINNER Victor added the comment:

[Off-topic: Heck, another one of those upside-down tracebacks. WHY???]

faulthandler is really a very low-level module. I wrote it to analyze 
deadlocks, memory corruptions and other sad cases. faulthandler is designed to 
provide as much information as possible even if Python internals are corrupted. 
So it only reads data structures, without processing them too much. For 
example, frames are stored from the most recent to the oldest. faulthandler 
also truncates long traceback to 100 frames (write "..." if there are more), to 
stop the loop if there is a cycle in the chained list of frames.

The documentation also mentions other limitations:
http://docs.python.org/dev/library/faulthandler.html

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nosy: +haypo

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<http://bugs.python.org/issue19293>
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