[New-bugs-announce] [issue39576] Surprising MemoryError in `decimal` with MAX_PREC

[Tim Peters]

New submission from Tim Peters <tim at python.org>:

Here under Python 3.8.1 on 64-bit Windows:

>>> import decimal
>>> c = decimal.getcontext()
>>> c.prec = decimal.MAX_PREC
>>> i = decimal.Decimal(4)
>>> i / 2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
MemoryError

Of course the result is exactly 2.  Which I have enough RAM to hold ;-)

The implicit conversion is irrelevant:

>>> i / decimal.Decimal(2)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
MemoryError

Floor division instead works fine:

>>> i // 2
Decimal('2')

----------
components: Library (Lib)
messages: 361536
nosy: tim.peters
priority: normal
severity: normal
status: open
title: Surprising MemoryError in `decimal` with MAX_PREC
versions: Python 3.8, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39576>
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