Bugs item #1226969, was opened at 2005-06-24 13:05
Message generated for change (Comment added) made by jacobo_es
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Category: Python Interpreter Core
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: jacobo_es (jacobo_es)
Assigned to: Nobody/Anonymous (nobody)
Summary: segfault in os module
Initial Comment:
python crashes when a bad parameters are passed to execl function
of the os module:
>>> import os
>>> os.execl("/bin/bash")
Segmentation Fault (core dumped)
No matter the platform (on ppc raises a bus error) and the version of
C compiler, always crashes, python versions used are 2.4.1 and
2.4c1.
Proved on MacOSX (ppc), and Knoppix, Red Hat Enterprise
and debian woody 3.0 (x86).
However, on 2.2.3 version not crashes.
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>Comment By: jacobo_es (jacobo_es)
Date: 2005-06-25 23:15
Message:
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I tried this directly on the C layer, too, and not raises a
signal 11, segmentation fault, just the function execl()
isn't executed and the program flow goes, not raises a
sigsegv, and that's not happen in
the same way in python, that abort the python interpreter
and dump a core file.
-( tmp )- ./p
execl not executed.
-( tmp )- cat p.c
#include <stdio.h>
int main() {
execl("/bin/bash");
fprintf(stderr, "execl not executed.\n");
exit(-1);
}
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Comment By: Reinhold Birkenfeld (birkenfeld)
Date: 2005-06-24 14:53
Message:
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user_id=1188172
This behaviour was introduced with the fixing of bug
#952953, where someone complained that he couldn't call
execl with only one argument.
I tried this directly on the C layer on Linux, and it
segfaults too.
Are there OSes where this is legal?
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