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strdup
Section: C Library Functions (3) Updated: 202-0-10 Index
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NAME
strdup - string duplicate
LIBRARY
Standard C library
( libc,~ -lc)
SYNOPSIS
#include <string.h>
char *strdup(const char *s);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
strdup():
_XOPEN_SOURCE >= 500
|| /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
|| /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
DESCRIPTION
The
strdup()
function returns a pointer to a new string which
is a duplicate of the string
s.
Memory for the new string is
obtained with
malloc(3),
and can be freed with
free(3).
RETURN VALUE
On success, the
strdup()
function returns a pointer to the duplicated
string.
It returns NULL if insufficient memory was available, with
errno
set to indicate the error.
ERRORS
See
malloc(3).
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
strdup()
| Thread safety | M-Safe
|
STANDARDS
POSIX.-2008.
HISTORY
SVr4, 4.3BS-Reno, POSIX.-2001.
SEE ALSO
malloc(3),
string(3),
strdupa(3),
wcsdup(3)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- ATTRIBUTES
-
- STANDARDS
-
- HISTORY
-
- SEE ALSO
-
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