[issue23999] Undefined behavior in dtoa.c (rshift 32 of 32bit data type)

[Mark Dickinson]

Mark Dickinson added the comment:

I'm pretty sure that our code was based on something rather more recent than 2001: it was the most recent version available at the time (around 2008?), and it incorporates subsequent fixes from David Gay.

Please don't replace our dtoa.c with a current version: ours has diverged from the original, and includes fixes that aren't available upstream.

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<http://bugs.python.org/issue23999>
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