Antoine Pitrou <pit...@free.fr> added the comment:

> > The problem is to detect that stderr file descriptor changes (eg. closed, 
> > duplicated, reopened, etc.). I don't think that it's possible to detect 
> > such 
> > changes (with a portable function).
> 
> When I said that, I hadn't fully investigated the intricacies of the io
> types. I was unaware that you could assign to "sys.stderr.buffer.raw"
> and change out the target fd. I assumed a BufferedWriter could not have
> the target stream changed out from beneath it.

AFAICT, this is not deliberate (not documented, and not tested for). It
should probably be fixed, actually, because there's no code that I know
of that ensures it does something meaningful.

----------
title: Display Python backtrace on SIGSEGV,     SIGFPE and fatal error -> 
Display Python backtrace on SIGSEGV, SIGFPE and fatal error

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue8863>
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