Message 360365 - Python tracker

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In-reply-to
Author	vstinner
Recipients	vstinner
Date	2020年01月21日.08:30:01
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1579595402.07.0.326081279431.issue39406@roundup.psfhosted.org>

Content
Currently, os.putenv() is always implemented with putenv(). The problem is that putenv(str) puts directly the string into the environment, the string is not copied. So Python has to keep track of this memory. In Python 3.9, this string is now cleared at Python exit, without unsetting the environment variable which cause bpo-39395 crash. I propose to implement os.putenv() with setenv() if available, which avoids bpo-39395 on platforms providing setenv().

Content

Currently, os.putenv() is always implemented with putenv(). The problem is that putenv(str) puts directly the string into the environment, the string is not copied. So Python has to keep track of this memory.
In Python 3.9, this string is now cleared at Python exit, without unsetting the environment variable which cause bpo-39395 crash.
I propose to implement os.putenv() with setenv() if available, which avoids bpo-39395 on platforms providing setenv().

History
Date	User	Action	Args
2020年01月21日 08:30:02	vstinner	set	recipients: + vstinner
2020年01月21日 08:30:02	vstinner	set	messageid: <1579595402.07.0.326081279431.issue39406@roundup.psfhosted.org>
2020年01月21日 08:30:01	vstinner	link	issue39406 messages
2020年01月21日 08:30:01	vstinner	create

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