New submission from Mark Dickinson <dicki...@gmail.com>:

There was a report[1] on c.l.p. that python3 from the OS X Python 3.1 
dmg download at www.python.org/download/releases/3.1/ crashes on 
startup.  I can reproduce this with the python.org download (using the 
OS X Terminal) only with a bad locale setting:

newton:~ dickinsm$ LANG=utf-8 python3
Fatal Python error: Py_Initialize: can't initialize sys standard streams
LookupError: unknown encoding: 
Abort trap (core dumped)

The core dump isn't useful:  just lots of 'No symbol table info 
available.'

This is on OS X 10.5.7/Intel.

I can't reproduce it with either the py3k branch or the release31-maint 
branch, built from scratch.

I suspect that this has to do with the behaviour of nl_langinfo(CODESET) 
on OS X: namely, after doing (in C) setlocale(LC_CTYPE, ""), the result 
of nl_langinfo(CODESET) appears to be "UTF-8" for well-defined utf-8 
locales (e.g., 'en_US.UTF-8'), "US-ASCII" for meaningless locales (e.g., 
'invalid'), but one just gets "" for locales like 'utf-8' or 'en_US'.
This in turn affects Python's locale.getpreferredencoding function. 
See also issue 2173, which may be related.

Ronald, any ideas?

[1] http://mail.python.org/pipermail/python-list/2009-June/718255.html

----------
assignee: ronaldoussoren
components: Interpreter Core, Macintosh
messages: 89972
nosy: marketdickinson, ronaldoussoren
severity: normal
status: open
title: OS X: python3 from python-3.1.dmg crashes at startup
type: crash
versions: Python 3.1

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<http://bugs.python.org/issue6393>
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