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bug#30626: 26.0.91; Crash when traversing a `stream-of-directory-files'


From: Eli Zaretskii
Subject: bug#30626: 26.0.91; Crash when traversing a `stream-of-directory-files'
Date: Thu, 01 Mar 2018 17:00:33 +0200

> From: Michael Heerdegen <address@hidden>
> Cc: address@hidden,  address@hidden
> Date: Thu, 01 Mar 2018 12:25:43 +0100
> 
> Seems that whether we get a crash or not depends on details in the
> implementation of lexical-binding.

Byte compilation doesn't just produce byte code, it also changes the
code into an equivalent one, but "equivalence" in this context doesn't
include side effects like stack usage.  As an extreme example,
consider a tail-recursive program that the byte compiler converts (or
at least might convert theoretically) into a loop.





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