Guido van Rossum added the comment:

OK, I've created issue 19334 to track test_asyncio hangs on other platforms. 
Let's please keep this issue restricted to AIX. I am aware of the following 
issue:

- select for read on the write end of a pipe returns immediately

Any other AIX issues also please open separate issues (and assign to me to get 
my immediate attention).

I wonder if we can at least dynamically detect that this does not work in the 
_read_ready() handler or even in the setup? ISTM that reading from the write 
end should immediately fail with EBADF. (It does on my system, but I don't want 
to generalize. :-)

----------
title: test_asyncio hanging for 1 hour -> test_asyncio hanging for 1 hour (AIX 
version, hangs in test_subprocess_interactive)

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue19293>
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