wcsdup - duplicate a wide-character string
wchar_t *wcsdup (const wchar_t *s);
The wcsdup function is the wide-character equivalent of the strdup
function. It allocates and returns a new wide-character string whose
initial contents is a duplicate of the wide-character string pointed to
Memory for the new wide-character string is obtained with malloc(3),
and can be freed with free(3).
The wcsdup function returns a pointer to the new wide-character string,
or NULL if sufficient memory was not available.
This function is a GNU extension.
GNU 1999-07-25 WCSDUP(3)
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