initsip() crashes with a corrupted stack

Question

When getting a pointer to the sip API:

sip_API = reinterpret_cast<const sipAPIDef*>(
    PyCapsule_Import("sip._C_API", 0));

a crash is reported in initsip().

Also, when constructing C++ classes using boost.Python, a strange error is returned:

TypeError: __init__() should return None, not 'NoneType'

Answer 1

Both of these problems are caused by linking against a different version of python than sip/boost are compiled with.