Message 314426 - Python tracker

➜

This issue tracker has been migrated to GitHub, and is currently read-only.
For more information, see the GitHub FAQs in the Python's Developer Guide.

Author	gregory.p.smith
Recipients	gregory.p.smith, izbyshev, martin.panter, nitishch, pitrou, vstinner
Date	2018-03-25.19:01:27
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1522004487.41.0.467229070634.issue32270@psf.upfronthosting.co.za>
In-reply-to

Content
This bug stems from: https://github.com/python/cpython/blob/master/Modules/_posixsubprocess.c#L454 When stdout=fd is passed, that results in c2pwrite=fd. The stdin/stdout/stderr pipe fds are closed when > 2 without checking to see if they are listed in pass_fds. https://github.com/python/cpython/blob/master/Lib/subprocess.py#L1306 maps the following: stdin -> p2cread stdout -> c2pwrite stderr -> errwrite

This bug stems from:

 https://github.com/python/cpython/blob/master/Modules/_posixsubprocess.c#L454

When stdout=fd is passed, that results in c2pwrite=fd.  The stdin/stdout/stderr pipe fds are closed when > 2 without checking to see if they are listed in pass_fds.

https://github.com/python/cpython/blob/master/Lib/subprocess.py#L1306 maps the following:
 stdin -> p2cread
 stdout -> c2pwrite
 stderr -> errwrite

History
Date	User	Action	Args
2018-03-25 19:01:27	gregory.p.smith	set	recipients: + gregory.p.smith, pitrou, vstinner, martin.panter, izbyshev, nitishch
2018-03-25 19:01:27	gregory.p.smith	set	messageid: <1522004487.41.0.467229070634.issue32270@psf.upfronthosting.co.za>
2018-03-25 19:01:27	gregory.p.smith	link	issue32270 messages
2018-03-25 19:01:27	gregory.p.smith	create