[Python-Dev] Disabling string interning for null and single-char causes segfaults

Amaury Forgeot d'Arc amauryfa at gmail.com
Mon Mar 4 20:06:31 CET 2013

2013/3/4 Serhiy Storchaka <storchaka at gmail.com>

> On 01.03.13 17:24, Stefan Bucur wrote:
>> Before digging deeper into the issue, I wanted to ask here if there are
>> any implicit assumptions about string identity and interning throughout
>> the interpreter implementation. For instance, are two single-char
>> strings having the same content supposed to be identical objects?
> I think this is not a bug if the code relies on the fact that an empty
> string is a singleton. This obviously is an immutable object and there is
> no public method to create different empty string.


>>> x = u'\xe9'.encode('ascii', 'ignore')
>>> x == '', x is ''
(True, False)

Amaury Forgeot d'Arc
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