строка символов (character string)
Пролог (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.
Имя (Name)
wcsdup — duplicate a wide-character string
Синопсис (Synopsis)
#include <wchar.h>
wchar_t *wcsdup(const wchar_t *string);
Описание (Description)
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.
Возвращаемое значение (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.
Ошибки (Error)
The wcsdup() function shall fail if:
ENOMEM Memory large enough for the duplicate string could not be
allocated.
The following sections are informative.
Примеры (Examples)
None.
Использование в приложениях (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.
Обоснование (Rationale)
None.
Будущие направления (Future directions)
None.
Смотри также (See also)
free(3p), strdup(3p), wcscpy(3p)
The Base Definitions volume of POSIX.1‐2017, wchar.h(0p)
