[boost] [Boost-bugs] [ boost-Bugs-1538741 ] wstring_rvalue_from_python crash on zero length PyObject

From: SourceForge.net (noreply_at_[hidden])
Date: 2006-08-11 10:31:00

Bugs item #1538741, was opened at 2006-08-11 14:30
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Category: Python
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Goncalo Nuno M. de Carvalho (glslang)
Assigned to: David Abrahams (david_abrahams)
Summary: wstring_rvalue_from_python crash on zero length PyObject

Initial Comment:

Using Python 2.3 (OSX native) and OSX 10.4.7 (powerpc-apple-darwin8-
gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5341))

Boost version is 1_33_1 and was compiled from source.

When PyObject_Length(intermediate) is zero in 
wstring_rvalue_from_python::extract (when referring to an empty string) a 
crash will occur in PyUnicode_AsWideChar, most probably because 0 is 
then passed to it.

Doing a if( result.empty( ) ) return std::wstring( ) right after the result 
string is constructed seems to solve this and produce correct results
on my code.

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