[C++-sig] Problems with functions taking string arguments on Windows

[greg Landrum]

[Boost 1.30, Win2K, MSVC v6]

Building the attached extension module and running the script results in 
crashes every time GetVal attempts to return.  The problem (as demonstrated 
by GetVal2) appears to be due to the fact that it's taking an std::string 
as an argument.

I haven't tested this exact code fragment, but analogous code works just 
fine on linux (g++ 3.2).  Is this:
a) BPL bug
b) MSVC v6 bug
c) Me bug

Additional information:
Just to verify that this is not due to my suggested changes in 
builtin_converters.cpp::string_rvalue_from_python(), I switched that code 
back to its previous form (without the PyString_Size argument to the 
std::string constructor); this does not change the behavior I'm observing 
(i.e. it still crashes ever time).

-greg
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import rdchem_new
print 'get val2:'
a = rdchem_new.GetVal2('foo')
print 'done:',a
print 'get val:'
a = rdchem_new.GetVal('foo')
print 'done:',a