wcsdup3p
Duplicate a wide-character string
Usage
#include <wchar.h>
wchar_t *wcsdup(const wchar_t *string);
Prolog
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
Overview
The wcsdup() function is the wide-character equivalent of the strdup() function.
The wcsdup() function shall return a pointer to a new wide-character string, allocated as if by a call to malloc(), which is the duplicate of the wide-character string string. The returned pointer can be passed to free(). A null pointer is returned if the new wide-character string cannot be created.
Return value
Upon successful completion, the wcsdup() function shall return a pointer to the newly allocated wide-character string. Otherwise, it shall return a null pointer and set errno to indicate the error.
Errors
The wcsdup() function shall fail if:
- ENOMEM
-
Memory large enough for the duplicate string could not be allocated.
The following sections are informative.
Examples
None.
Application usage
For functions that allocate memory as if by malloc(), the application should release such memory when it is no longer required by a call to free(). For wcsdup(), this is the return value.
Rationale
None.
Future directions
None.