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copied!<p><code>reinterpret_casts</code> are used for low-level implementation defined casts. According to the standard, <code>reinterpret_casts</code> can be used for the following conversions (C++03 5.2.10):</p> <ul> <li>Pointer to an integral type</li> <li>Integral type to Pointer</li> <li>A pointer to a function can be converted to a pointer to a function of a different type</li> <li>A pointer to an object can be converted to a pointer to an object of different type</li> <li>Pointer to member functions or pointer to data members can be converted to functions or objects of a different type. The result of such a pointer conversion is unspecified, except the pointer a converted back to its original type.</li> <li>An expression of type A can be converted to a reference to type B if a pointer to type A can be explicitly converted to type B using a <code>reinterpret_cast</code>.</li> </ul> <p>That said, using the <code>reinterpret_cast</code> is not a good solution in your case, since casting to different types are unspecified by the standard, though casting from <code>char *</code> to <code>unsigned char *</code> and back should work on most machines.</p> <p>In your case I would think about using a <code>static_cast</code> or not casting at all by defining <code>stg</code> as type <code>char *</code>:</p> <pre><code>template<class ITER_T> char *copy_binary( unsigned char length, const ITER_T& begin) { // alloc_storage() returns a char* char* stg = alloc_storage(length); std::copy(begin, begin + length, stg); return stg; } </code></pre>

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