Hey Leonard,
Here's a short doc about running python scripts that load
boost::python bindings under gdb:
http://software.icecube.wisc.edu/offline-software.trunk/gdb_python.html
In short (i'm guessing this is more or less what you'll need):
gdb --args /usr/bin/python /path/to/my/python/script.py
run
# it runs, throws an exception, but the stacktrace isn't helpful
catch throw # this only works after the first run
run
# jackpot, you're at the point of the throw
-t
Leonard Ritter wrote:
On Sun, Dec 14, 2008 at 11:22 PM, Leonard Ritter <pa...@paniq.org> wrote:
That's hard to tell without more context: Who is doing the iteration, for
example ?
I'm sorry. I was a bit stressed out yesterday. I recognize that you only
want to help, and I should be more patient.
Here is the top part of a stack trace, as it usually occurs:
#0 0xb65593dc in __cxa_allocate_exception () from /usr/lib/libstdc++.so.6
#1 0xb6a85a9e in boost::python::throw_error_already_set ()
from /usr/lib/libboost_python-gcc42-1_34_1-py25.so.1.34.1
#2 0xb6a88ab1 in boost::python::objects::stop_iteration_error ()
from /usr/lib/libboost_python-gcc42-1_34_1-py25.so.1.34.1
#3 0xb6ca38c3 in
boost::python::objects::iterator_range<boost::python::return_internal_reference<1u,
boost::python::default_call_policies>,
__gnu_cxx::__normal_iterator<halebopp::wave_range*,
std::vector<halebopp::wave_range, std::allocator<halebopp::wave_range> > >
::next::operator() (this=0x9931cec,
se...@0x91fcfcc) at /usr/include/boost/python/object/iterator.hpp:64
This problem occurred first when iterating an array that was exported
through the indexing suite. I do not have anything else that uses
StopIteration, so I can't say if it's really a problem of the indexing
suite. My guess is: no. When I rewrote the offending code to be a simple
get-by-index operation, the next (above) part where an iteration would be
caused inside C++ code created a problem. So somehow I end up with an
unhandled python exception in boost that does not get forwarded - my guess.
Could this in some way relate to assertions (put by assert()) put in the C++
code? Something like: boost catches these assertions, converts them into
exceptions, then iterates a bit, hits a StopIteration and has the previously
unhandled exception still active? I am just wildly guessing here.
Please help!
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