Re: [Pyparsing] Memory issues with 2.0.6

[Martijn V. <m.v...@lu...>]

Dear Paul and others,

(Sorry for replying out of thread, I only just subscribed.)

I can report the same problem with Pyparsing 2.0.6 on this grammar:

https://github.com/mutalyzer/mutalyzer/blob/master/mutalyzer/grammar.py

Memory usage continues to increase.

best,
Martijn


> The problem is definitely in the "cosmetic-only" change to the
> returned error message for MatchFirst and Or (which also manifests as
> a Unicode error), and does not even require calling parseString, just
> streamline().  Thanks for the test case Will, I can repro the problem
> with it, but am trying to distill it down to a smaller case to add to
> my unit tests, and to work with in fixing the bug.
>
> For now, impatient users can comment out line 2354 in pyparsing.py:
>
> self.errmsg = "Expected " + str(self)