casting operator

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2 total messages Started by Maya Sat, 01 Mar 2003 16:18

#962

Author: Maya
Date: Sat, 01 Mar 2003 16:18

14 lines
2283 bytes

size_t num = 3;
std::cout << reinterpret_cast<char*> (num) << std::endl;
Can someone please tell me if there is a problem with the code above, it
keeps giving me a segmentation fault!

Thank in advance.
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Re: casting operator

#963

Author: Kim Seungtai
Date: Sat, 01 Mar 2003 19:14

14 lines
1845 bytes

"Maya"
> size_t num = 3;
> std::cout << reinterpret_cast<char*> (num) << std::endl;
> Can someone please tell me if there is a problem with the code above, it
> keeps giving me a segmentation fault!

Although a value of integral type can be reinterpreted to a pointer, the
result might not be a valid pointer. It's depend on your implementation.
Only It's guaranteed converting between a integer and a pointer that a
pointer converted to an integer and the integer back to same type's pointer
and the integer is zero which yields a null pointer.


S Kim

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