[C++-sig] Re: crashes on functions with std::string arguments

[David Abrahams]

"Thomas Schipolowski" <thomas.schipolowski at tu-berlin.de> writes:

>  Hello,
>  I am using Python 2.3 and Boost_1_32_0 with VC6 on Windows 2000. I
> experience crashes due to heap corruption when a function or method with a
> std::string argument is called. The same problem is also triggered by the
> extract<std::string> facility.
>  The following test code reproduces both conditions:

Not by itself, it doesn't!  What Python code do you need to execute to
generate the crash?

> #include <string>
> #include <boost/python.hpp>
> using namespace boost::python;
>
> int test1(std::string s) {
>             return s.end() - s.begin();
> }
>
> int test2(object o) {
>             extract<std::string> extr(o);
>             if (extr.check()) {
>                         std::string s(extr());
>                         return s.end() - s.begin();
>             } else {
>                         return -1;
>             }
> }
>
> BOOST_PYTHON_MODULE(test)
> {
>             def("test1", test1);
>             def("test2", test2);
> }

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com