NAME¶

strdup - string duplicate

LIBRARY¶

Standard C library (libc, -lc)

SYNOPSIS¶

#include <string.h>

char *strdup(const char *s);

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).

STANDARDS¶

POSIX.1-2008.

HISTORY¶

SVr4, 4.3BSD-Reno, POSIX.1-2001.

SEE ALSO¶

malloc(3), string(3), strdupa(3), wcsdup(3)