RE: [Boost-Users] Problem with 1.30.0 lexical_cast

From: Tom Matelich (tmatelich_at_[hidden])
Date: 2003-03-27 16:20:24

I agree :(  I tried to use the debugger, but once it went into
stlport_icl.dll I couldn't see which ostream function was being called.  I'm
currently trying to change the ostream signature to take a reference rather
than a copy, in hopes that that will help.  Unfortunately the amount of code
to compile between these areas is quite large.

> -----Original Message-----
> From: Terje Slettebų [mailto:tslettebo_at_[hidden]]
> Sent: Wednesday, March 26, 2003 9:15 PM
> To: Boost-Users_at_[hidden]
> Subject: Re: [Boost-Users] Problem with 1.30.0 lexical_cast
> 
> 
> >From: "Tom Matelich" <tmatelich_at_[hidden]>
> 
> > Compiler: gcc 3.2 and 3.2.2
> >
> > I believe this is actually a bug in gcc, but I'm going to 
> post it hopes
> that
> > someone can help me.  We have a handy little tool for 
> generating enums
> with
> > associated string conversion and stream 
> insertion/extraction functions.
> > When we upgraded to boost 1.30.0, lexical_cast'ing one of 
> these enums to
> > std::string started behaving incorrectly, rather than the 
> name, it is
> giving
> > me the integral value.  It seems that the lexical_stream is 
> being used.
> > Unfortunately, my test case is working fine.  The complete test case
> > (including definition of ZAcquisition::PPG) is appended at 
> the end.  The
> > code I am seeing failure with looks like:
> >
> > void foo(ZAcquisition::PPG::Type gt)
> > {
> > ...
> >    std::string str;
> >    str =  boost::lexical_cast<std::string>(gt);
> >    std::cerr << "DEBUG, storing encode for PPG: " << str << 
> ", aka " << gt
> > << std::endl;
> > ...
> > }
> >
> > This outputs (for example):
> > DEBUG, storing encode for PPG: 0, aka ONE
> >
> > I tried boost::lexical_cast<std::string, 
> ZAcquisition::PPG::Type>(gt) as
> > well.
> >
> > Anyone have any ideas?  For now I'm going to back out to 1.29.0's
> > lexical_cast.
> 
> > It happens on my Windows/Intel 7.0 box as well.
> 
> It's a little difficult when you don't have a failing test 
> case. If you had
> that, I could have looked into it. The above code works 
> correctly on Intel
> C++ 7.0 (Windows), here.
> 
> 
> Regards,
> 
> Terje
> 
> 
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