David Abrahams <[EMAIL PROTECTED]> writes:
| Gabriel Dos Reis <[EMAIL PROTECTED]> writes:
|
| > "David B. Held" <[EMAIL PROTECTED]> writes:
| >
| > | Does this have any merit whatsoever?
| > |
| > | template <typename T, typename U>
| > | T* dangerous_cast(U* p)
| > | {
| > | return static_cast<T*>(static_cast<void*>(p));
| > | }
| >
| > Is it any different from reinterpret_cast<T*>(p) ?
|
| It might be, depending on your compiler. The behavior of
| reinterpret_cast<T*> is implementation-defined.
The mapping used by reinterpret_cast<> is implementation defined,
thus an implementation is required to document it.
1) Do you have any corresponding guarantee for converting a void* to
T* when the source is *not* a T* nor the address obtained from a T?
2) Isn't the mapping U* -> void* -> T* at best
implementation-defined if not undefined behaviour?
-- Gaby
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