Static_cast wchar_t * to int * or short * - why is it illegal?

Question

In Microsoft VC2005 and g ++ compilers, the following errors result in an error:

In win32 VC2005: sizeof (wchar_t) is 2

wchar_t *foo = 0;
static_cast<unsigned short *>(foo);

Results in

error C2440: 'static_cast' : cannot convert from 'wchar_t *' to 'unsigned short *' ...

On Mac OS X or Linux g ++: sizeof (wchar_t) - 4

wchar_t *foo = 0;
static_cast<unsigned int *>(foo);

Results in

error: invalid static_cast from type 'wchar_t*' to type 'unsigned int*'

Of course, I can always use reinterpret_cast. However, I would like to understand why the compiler is considered illegal for static_cast for the corresponding integer type. I am sure there is a good reason ...

Answer 1

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Answer 2

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Answer 3

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Answer 4

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