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| author | R David Murray <rdmurray@bitdance.com> | 2013-03-19 13:56:54 -0400 |
|---|---|---|
| committer | R David Murray <rdmurray@bitdance.com> | 2013-03-19 13:56:54 -0400 |
| commit | 660e89b163b52de6fbcdb4b0d963b2baf4da1d9d (patch) | |
| tree | e75f8002c52874b5195a078169ffa492b3c83dec | |
| parent | ed1fe6be061d3c0be9d8b7735b65bd17db07850c (diff) | |
| parent | 7889944b83cf04cefb45cd658644298218eac5db (diff) | |
| download | cpython-git-660e89b163b52de6fbcdb4b0d963b2baf4da1d9d.tar.gz | |
Merge: #17443: Fix buffering in IMAP4_stream.
In Python2 Popen uses *FILE objects, which wind up buffering even though
subprocess defaults to no buffering. In Python3, subprocess streams really
are unbuffered by default, but the imaplib code assumes read is buffered. This
patch uses the default buffer size from the io module to get buffered streams
from Popen.
Much debugging work and patch by Diane Trout.
The imap protocol is too complicated to write a test for this simple
change with our current level of test infrastructure.
| -rw-r--r-- | Lib/imaplib.py | 3 | ||||
| -rw-r--r-- | Misc/ACKS | 1 | ||||
| -rw-r--r-- | Misc/NEWS | 4 |
3 files changed, 8 insertions, 0 deletions
diff --git a/Lib/imaplib.py b/Lib/imaplib.py index cc23e8912a..c959f12da0 100644 --- a/Lib/imaplib.py +++ b/Lib/imaplib.py @@ -24,6 +24,8 @@ __version__ = "2.58" import binascii, errno, random, re, socket, subprocess, sys, time, calendar from datetime import datetime, timezone, timedelta +from io import DEFAULT_BUFFER_SIZE + try: import ssl HAVE_SSL = True @@ -1244,6 +1246,7 @@ class IMAP4_stream(IMAP4): self.sock = None self.file = None self.process = subprocess.Popen(self.command, + bufsize=DEFAULT_BUFFER_SIZE, stdin=subprocess.PIPE, stdout=subprocess.PIPE, shell=True, close_fds=True) self.writefile = self.process.stdin @@ -1236,6 +1236,7 @@ Alberto Trevino Matthias Troffaes Tom Tromey John Tromp +Diane Trout Jason Trowbridge Brent Tubbs Anthony Tuininga @@ -289,6 +289,10 @@ Core and Builtins Library ------- +- Issue #17443: impalib.IMAP4_stream was using the default unbuffered IO + in subprocess, but the imap code assumes buffered IO. In Python2 this + worked by accident. IMAP4_stream now explicitly uses buffered IO. + - Issue #17476: Fixed regression relative to Python2 in undocumented pydoc 'allmethods'; it was missing unbound methods on the class. |