[Numpy-discussion] numpy core dump on linux

Robert Kern robert.kern@gmail....
Wed Sep 2 17:37:00 CDT 2009


On Wed, Sep 2, 2009 at 17:23, Jeremy Mayes<jeremy.mayes@gmail.com> wrote:
> This one line causes python to core dump on linux.
> numpy.lexsort([
> numpy.array(['-','-','-','-','-','-','-','-','-','-','-','-','-'])[::-1],numpy.array([732685.,
> 732685.,  732685.,  732685.,  732685.,  732685.,732685.,  732685.,
> 732685.,  732685.,  732685.,  732685.,  732679.])[::-1]])
>
> Here's some version info:
>
> python 2.5.4
> numpy 1.3.0
>
> error is
> *** glibc detected *** free(): invalid next size (fast): 0x0000000000526be0
> ***
>
> Any ideas?

Huh. The line executes for me on OS X, but the interpreter crashes
when exiting. Here is my backtrace:


Thread 0 Crashed:
0   org.python.python             	0x00270760 collect + 288
1   org.python.python             	0x002712ea PyGC_Collect + 42
2   org.python.python             	0x00260390 Py_Finalize + 208
3   org.python.python             	0x0026f750 Py_Main + 2768
4   org.python.python             	0x00001f82 0x1000 + 3970
5   org.python.python             	0x00001ea9 0x1000 + 3753


Can you show us a gdb backtrace on your machine?

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless
enigma that is made terrible by our own mad attempt to interpret it as
though it had an underlying truth."
  -- Umberto Eco


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