wcsdup - duplicate a wide-character string
The wcsdup() function is the wide-character
equivalent of the strdup(3) function. It allocates and
returns a new wide-character string whose initial contents is a
duplicate of the wide-character string pointed to by
On success, wcsdup() returns a pointer to the new
wide-character string. On error, it returns NULL, with
set to indicate the cause of the error.
Insufficient memory available to allocate duplicate string.
POSIX.1-2008. This function is not specified in POSIX.1-2001, and is not widely available on other systems.
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