So long as Type has no ctor/dtor, I don't see a reason why it wouldn't work. On 4/20/05, Sean DeNigris <lotusone@optonline.net> wrote:

Hey-hey,

Is it proper to to use static_cast like this:

//Library.h - legacy library

typedef ??? Type; //library-defined, we don't know the actual type

typedef Type* PType; //library-defined pointer type

//sets bufSize to # bytes necessary if buf not big enough

LibraryFunction(PType buf, int* bufSize);

//MyCode.cpp

int bytesNeeded = 0;

LibraryFunction(0, &bytesNeeded);

scoped_array<Type>(static_cast<PType>(new BYTE[bytesNeeded]));

The legacy library tells us storage requirements in BYTEs, but I want to deal with 'Type's, not BYTEs.

Is there a conceivable reason why this could not be safe, even if it happens to be with the current implementation?

Thanks.

- Sean _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

-- Cory Nelson http://www.int64.org

On 4/20/05, Sean DeNigris <lotusone@optonline.net> wrote:

LibraryFunction(0, &bytesNeeded); scoped_array<Type>(static_cast<PType>(new BYTE[bytesNeeded]));

I'm not sure if that would nessesarily work properly depending on how your architecture requires things to be aligned... How about this?: scoped_array<Type>( new Type[ bytesNeeded / sizeof(Type) ] ); I think that should work, so long as LibraryFunction includes any padding. - Scott McMurray