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-rw-r--r--pym/_emerge/SpawnProcess.py6
1 files changed, 4 insertions, 2 deletions
diff --git a/pym/_emerge/SpawnProcess.py b/pym/_emerge/SpawnProcess.py
index 0cddbe801..bc861e9c5 100644
--- a/pym/_emerge/SpawnProcess.py
+++ b/pym/_emerge/SpawnProcess.py
@@ -1,4 +1,4 @@
-# Copyright 1999-2010 Gentoo Foundation
+# Copyright 1999-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
from _emerge.SubProcess import SubProcess
@@ -72,7 +72,9 @@ class SpawnProcess(SubProcess):
else:
fd_pipes[0] = fd_pipes_orig[0]
- files.process = os.fdopen(master_fd, 'rb')
+ # WARNING: It is very important to use unbuffered mode here,
+ # in order to avoid issue 5380 with python3.
+ files.process = os.fdopen(master_fd, 'rb', 0)
if logfile is not None:
fd_pipes[1] = slave_fd