[pypy-issue] [issue926] string concatenation using + kills PyPy

[hruske]

hruske <zejn at kiberpipa.org> added the comment:

Is there a possibility, that a warning would be issued if a str + str is
detected in a loop?

Going from 30s to more than 30 minutes+ without an obvious reason is pretty bad.

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PyPy bug tracker <tracker at bugs.pypy.org>
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