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	MT-Safe

STANDARDS

POSIX.1-2008.

HISTORY

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