OON: libstc++-v3 vector not convertible to pointer

[Geoffrey Furnish]

nbecker@fred.net writes:
 > I see that in libstdc++-v3 (current cvs) a vector::iterator is no
 > longer compatible with a pointer.  Specifically, this won't work:
 > 
 > reinterpret_cast<fftw_real*>(in.begin())
 > 
 > where in is vector.begin() and fftw_real is double.
 > 
 > Is there any alternative class I could use?  This seems to be a
 > fundamental need for high performance computing, since we still we
 > need to interoperate with C for some time to come.

:-).  It is really unbelievable, isn't it?  Note, however, that this
implementation choice does not violate the standard.  

It still stores the data contiguously (for now?  cross your
fingers...), so you can always do something like:

fftw_real *inbegin = &in[0];

or even:

fftw_real *inbegin = &(*in.begin());

-- 
Geoffrey Furnish            Actel Corporation        furnish@actel.com
Senior Staff Engineer      955 East Arques Ave       voice: 408-522-7528
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