New submission from Henry Precheur <[EMAIL PROTECTED]>:
$ python2.5
Python 2.5.2 (r252:60911, Jun 16 2008, 15:20:47)
[GCC 3.3.5 (propolice)] on openbsd4
Type "help", "copyright", "credits" or "license" for more information.
>>> def complete(text, state):
... print 'complete %r %d' % (text, state)
... if text == 'i' and state == 0:
... return 'import'
... else:
... return None
...
>>> import readline; readline.parse_and_bind("tab: complete")
>>> readline.set_completer(complete)
>>> i<TAB> # <TAB> is press the tab key
complete 'i' 0
complete 'i' 1
Segmentation fault (core dumped)
The problem is that Python is using a function present in libreadline
but not declared in readline/readline.h: completion_matches. Instead of
using rl_completion_matches.
Therefor the return type of completion_matches was an int which is
32bits on amd64 but the function was supposed to returns a pointer which
is 64 bits. So when the pointer had a "high" value, it was truncated.
The problem is fixed by adding libcurses to AC_CHECK_LIB when checking
for functions in libreadline since libreadline depends on curses. This
makes Python use the correct functions declared on readline.h with a
correct return type.
Patch is attached.
(Others versions of Python should also be affected)
----------
components: Library (Lib)
files: patch.configure.in
messages: 71723
nosy: henry.precheur
severity: normal
status: open
title: readline module Crashs on OpenBSD/amd64
type: crash
versions: Python 2.5
Added file: http://bugs.python.org/file11206/patch.configure.in
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Python tracker <[EMAIL PROTECTED]>
<http://bugs.python.org/issue3645>
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