On Sat, 2010-01-23 at 15:59 +0000, sergun wrote:
> I have a problem with storing reference to Python object inside C++.
>
> The following Boost.Python wrapping class:
>
>
>
> #include <boost/python.hpp>
>
> using namespace boost;
> using namespace boost::python;
>
> namespace cmodule
> {
>
> object y;
>
> void setY(object y1) { y = y1; }
>
> }
>
> using namespace cmodule;
>
> BOOST_PYTHON_MODULE(cmodule)
> {
> def("setY",setY);
> }
>
>
>
>
> Crashes with “Segmentation fault” on so simple python fragment.
>
This might be a static initialization problem: you declare "y", but it's
not clear from your code fragment whether it gets initialized. I would
have expected that to result in a linker error, but the way Python does
its dynamic loading might have suppressed that.
It's probably a good idea to avoid global variables in source files
anyhow. Wrapping it in a function:
object & getY() {
static object y;
return y;
}
void setY(object y1) { getY() = y1; }
might eliminate your segfault.
Jim Bosch
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