f2py Error - module crashes after several iterations...

Robert Kern robert.kern at gmail.com
Thu Oct 23 16:18:26 CEST 2008

John [H2O] wrote:
> I can try, would you mind giving very brief instructions on how to 'run it
> under gdb'... thanks!

Sure. It goes something like this:

$ gdb python
GNU gdb 6.3.50-20050815 (Apple version gdb-768) (Tue Oct  2 04:07:49 UTC 2007)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-apple-darwin"...Reading symbols for shared 
libraries .. done

(gdb) run my_crashing_script.py
... output from gdb
(gdb) bt
... this is the backtrace

If your program doesn't start running immediately after the run command, but 
instead tells you something like this:

   Program received signal SIGTRAP, Trace/breakpoint trap.

do this:

   (gdb) continue

It depends on your platform, and how gdb is configured whether or not you get 
this, I think. That's what I get on OS X.

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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