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  1. Bug #522804
  2. Comment #7

Comment 7 for bug 522804

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John A Meinel (jameinel) wrote : Re: [Bug 522804] Re: segfault in dirstate process_entry under macports python

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Harish Narayanan wrote:
> 1. I think the following is the offending line:
>
> Program received signal EXC_BAD_ACCESS, Could not access memory.
> Reason: KERN_PROTECTION_FAILURE at address: 0x00000000
> 0x0162b74e in __pyx_f_6bzrlib_21_dirstate_helpers_pyx_13ProcessEntryC__process_entry (__pyx_v_self=0x17b8e90, __pyx_v_entry=0x188e0a8, __pyx_v_path_info=0x1897e40) at bzrlib/_dirstate_helpers_pyx.c:5225
> 5225 Py_DECREF(__pyx_v_old_path_u);
>

#1 Do we know what version of Pyrex was used to generate the .c file? It
is possible there is a bug we should track down. (If you are using the
tarball, then it should be pyrex 0.9.8.5, but we'd see a problem on
other platforms then.)

#2 For example, pyrex 0.9.4.* had a known bug where it would use
Py_DECREF instead of Py_XDECREF and that would cause problems with
trying to decrement a NULL pointer.

Alternatively we could look ourselves and see if there is an unhandled
code path that is causing 'old_path_u' to be set to NULL.

John
=:->

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