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NAME

wcsdup — save a copy of a wide string

SYNOPSIS

#include <wchar.h>

wchar_t *
wcsdup(const wchar_t *str);

DESCRIPTION

The wcsdup() function allocates sufficient memory for a copy of the wide-character string str, does the copy, and returns a pointer to it. The pointer may subsequently be used as an argument to the function free(3).

If insufficient memory is available, NULL is returned.

EXAMPLES

The following will point p to an allocated area of memory containing the nul-terminated string "foobar":

const char	*o = "foobar";
wchar_t		*p, b[32];
size_t		 blen;

blen = sizeof(b) / sizeof(b[0]);
if (mbstowcs(b, o, blen) == (size_t)-1)
	err(1, NULL);
b[blen - 1] = 0;
if ((p = wcsdup(b)) == NULL)
	err(1, NULL);

ERRORS

The wcsdup() function may fail and set the external variable errno for any of the errors specified for the library function malloc(3).

SEE ALSO

free(3), malloc(3), strdup(3)

STANDARDS

The wcsdup() function conforms to IEEE Std 1003.1-2008 (“POSIX.1”).

HISTORY

The wcsdup() function was ported from NetBSD and first appeared in OpenBSD 5.0.