The strdup() function shall return a pointer to a new string,
which is a duplicate of the string pointed to by s1.
The returned pointer can be passed to free(). A null pointer
is returned if the new
string cannot be created.
The strdup() function shall return a pointer to a new string
on success. Otherwise, it shall return a null pointer and
set errno to indicate the error.
The strdup() function may fail if:
Storage space available is insufficient.
The following sections are informative.
free() , malloc() , the Base Definitions volume of
IEEE Std 1003.1-2001, <string.h>
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online at