strdupa(3)                 Library Functions Manual                 strdupa(3)

NAME
       strdupa - string duplicate using-alloca

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #define _GNU_SOURCE  /* See feature_test_macros(7) */
       #include <string.h>

       char *strdupa(const char *s);

DESCRIPTION
       strdupa() is similar to strdup(3), but uses alloca(3) to allocate the
       buffer.

       It is equivalent to

           strcpy(alloca(strlen(s) + 1), s)

RETURN VALUE
       On success, this macro returns a pointer to the duplicated string.

ATTRIBUTES
       For an explanation of the terms used in this section, see
       attributes(7).

       +--------------------------------------------+---------------+---------+
       |Interface                                   | Attribute     | Value   |
       +--------------------------------------------+---------------+---------+
       |strdupa ()                                  | Thread safety | MT-Safe |
       +--------------------------------------------+---------------+---------+
STANDARDS
       GNU.

HISTORY
       GNU.

CAVEATS
       See alloca(3).

SEE ALSO
       string(3), alloca(3), strdup(3)

Linux man-pages 6.19              2026-08-10                        strdupa(3)