New submission from Oren Milman:
The following code crashes the interpreter:
import decimal
import fractions
class BadRational(fractions.Fraction):
numerator = None
denominator = 42
decimal.Decimal() < BadRational()
this is because numerator_as_decimal() (in Modules/_decimal/_decimal.c) assumes
that 'numerator' is an integer.
multiply_by_denominator() (in Modules/_decimal/_decimal.c) also assumes that
'denominator' is an integer, and so the following code crashes the interpreter:
import decimal
import fractions
class BadRational(fractions.Fraction):
numerator = 42
denominator = None
decimal.Decimal() < BadRational()
----------
components: Extension Modules
messages: 301809
nosy: Oren Milman
priority: normal
severity: normal
status: open
title: crashes when comparing between a Decimal object and a bad Rational object
type: crash
versions: Python 3.7
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Python tracker <[email protected]>
<https://bugs.python.org/issue31406>
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