17.02.14 01:27, Nick Coghlan написав(ла):
This change doesn't fix any of the known crashers in Lib/test/crashers,
though - I applied the patch locally and checked.
It fixes other crasher (http://bugs.python.org/issue20440#msg209713).
The point is that people already know what Py_CLEAR does. T
On 17 Feb 2014 06:12, "Serhiy Storchaka" wrote:
>
> 16.02.14 02:05, Nick Coghlan написав(ла):
>
>> It's also likely than many of these crashes could only be reproduced
>> through incorrect usage of the C API.
>
>
> Rather through queer or malicious usage of Python classes with strange
code in __de
16.02.14 02:05, Nick Coghlan написав(ла):
It's also likely than many of these crashes could only be reproduced
through incorrect usage of the C API.
Rather through queer or malicious usage of Python classes with strange
code in __del__.
For example:
Py_CLEAR_AND_SET
Py_XCLEAR_AND
On 16 February 2014 02:52, Serhiy Storchaka wrote:
> There are objections to these patches. Raymond against backporting the patch
> unless some known bugs are being fixed [1]. But it fixes at least one bug
> that caused a crash. And I suspect that there may be other bugs, just we
> still have no r
29.01.14 20:24, Serhiy Storchaka написав(ла):
The Py_CLEAR macros is used as safe alternative for following unsafe
idiomatic code:
Py_XDECREF(ptr);
ptr = NULL;
But other unsafe idiomatic code is widely used in the sources:
Py_XDECREF(ptr);
ptr = new_value;
Every occurrence
29.01.14 21:10, Serhiy Storchaka написав(ла):
Antoine already proposed similar macros [1] [2]. But now we have about
50 potential bugs which can be fixed with these macros.
[1] https://mail.python.org/pipermail/python-dev/2008-May/079862.html
[2] http://bugs.python.org/issue20440
[2] http://bu
Antoine already proposed similar macros [1] [2]. But now we have about
50 potential bugs which can be fixed with these macros.
[1] https://mail.python.org/pipermail/python-dev/2008-May/079862.html
[2] http://bugs.python.org/issue20440
___
Python-Dev m
The Py_CLEAR macros is used as safe alternative for following unsafe
idiomatic code:
Py_XDECREF(ptr);
ptr = NULL;
But other unsafe idiomatic code is widely used in the sources:
Py_XDECREF(ptr);
ptr = new_value;
Every occurrence of such code is potential bug for same reasons as
