--- a/argz.h
+++ b/argz.h
-@@ -39,6 +39,7 @@
+@@ -38,8 +38,6 @@
+ #ifndef _ARGZ_H
#define _ARGZ_H 1
- #include <features.h>
-+#include <sys/cdefs.h>
-
+-#include <features.h>
+-
#define __need_error_t
#include <errno.h>
-@@ -76,9 +77,9 @@ extern error_t argz_create_sep (__const char *__restrict __string,
+ #include <string.h> /* Need size_t, and strchr is called below. */
+@@ -52,16 +50,17 @@
+ typedef int error_t;
+ #endif
+
+-
+-__BEGIN_DECLS
++#ifdef __cplusplus
++extern "C" {
++#endif
+
+ /* Make a '\0' separated arg vector from a unix argv vector, returning it in
+ ARGZ, and the total length in LEN. If a memory allocation error occurs,
+ ENOMEM is returned, otherwise 0. The result can be destroyed using free. */
+ extern error_t __argz_create (char *__const __argv[], char **__restrict __argz,
+- size_t *__restrict __len) __THROW;
++ size_t *__restrict __len) __attribute__ ((__nothrow__));
+ extern error_t argz_create (char *__const __argv[], char **__restrict __argz,
+- size_t *__restrict __len) __THROW;
++ size_t *__restrict __len) __attribute__ ((__nothrow__));
+
+ /* Make a '\0' separated arg vector from a SEP separated list in
+ STRING, returning it in ARGZ, and the total length in LEN. If a
+@@ -69,65 +68,65 @@ extern error_t argz_create (char *__const __argv[], char **__restrict __argz,
+ The result can be destroyed using free. */
+ extern error_t __argz_create_sep (__const char *__restrict __string,
+ int __sep, char **__restrict __argz,
+- size_t *__restrict __len) __THROW;
++ size_t *__restrict __len) __attribute__ ((__nothrow__));
+ extern error_t argz_create_sep (__const char *__restrict __string,
+ int __sep, char **__restrict __argz,
+- size_t *__restrict __len) __THROW;
++ size_t *__restrict __len) __attribute__ ((__nothrow__));
/* Returns the number of strings in ARGZ. */
extern size_t __argz_count (__const char *__argz, size_t __len)
- __THROW __attribute_pure__;
-+ __THROW;
++ __attribute__ ((__nothrow__));
extern size_t argz_count (__const char *__argz, size_t __len)
- __THROW __attribute_pure__;
-+ __THROW;
++ __attribute__ ((__nothrow__));
/* Puts pointers to each string in ARGZ into ARGV, which must be large enough
to hold them all. */
+ extern void __argz_extract (__const char *__restrict __argz, size_t __len,
+- char **__restrict __argv) __THROW;
++ char **__restrict __argv) __attribute__ ((__nothrow__));
+ extern void argz_extract (__const char *__restrict __argz, size_t __len,
+- char **__restrict __argv) __THROW;
++ char **__restrict __argv) __attribute__ ((__nothrow__));
+
+ /* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
+ except the last into the character SEP. */
+-extern void __argz_stringify (char *__argz, size_t __len, int __sep) __THROW;
+-extern void argz_stringify (char *__argz, size_t __len, int __sep) __THROW;
++extern void __argz_stringify (char *__argz, size_t __len, int __sep) __attribute__ ((__nothrow__));
++extern void argz_stringify (char *__argz, size_t __len, int __sep) __attribute__ ((__nothrow__));
+
+ /* Append BUF, of length BUF_LEN to the argz vector in ARGZ & ARGZ_LEN. */
+ extern error_t __argz_append (char **__restrict __argz,
+ size_t *__restrict __argz_len,
+ __const char *__restrict __buf, size_t _buf_len)
+- __THROW;
++ __attribute__ ((__nothrow__));
+ extern error_t argz_append (char **__restrict __argz,
+ size_t *__restrict __argz_len,
+ __const char *__restrict __buf, size_t __buf_len)
+- __THROW;
++ __attribute__ ((__nothrow__));
+
+ /* Append STR to the argz vector in ARGZ & ARGZ_LEN. */
+ extern error_t __argz_add (char **__restrict __argz,
+ size_t *__restrict __argz_len,
+- __const char *__restrict __str) __THROW;
++ __const char *__restrict __str) __attribute__ ((__nothrow__));
+ extern error_t argz_add (char **__restrict __argz,
+ size_t *__restrict __argz_len,
+- __const char *__restrict __str) __THROW;
++ __const char *__restrict __str) __attribute__ ((__nothrow__));
+
+ /* Append SEP separated list in STRING to the argz vector in ARGZ &
+ ARGZ_LEN. */
+ extern error_t __argz_add_sep (char **__restrict __argz,
+ size_t *__restrict __argz_len,
+ __const char *__restrict __string, int __delim)
+- __THROW;
++ __attribute__ ((__nothrow__));
+ extern error_t argz_add_sep (char **__restrict __argz,
+ size_t *__restrict __argz_len,
+ __const char *__restrict __string, int __delim)
+- __THROW;
++ __attribute__ ((__nothrow__));
+
+ /* Delete ENTRY from ARGZ & ARGZ_LEN, if it appears there. */
+ extern void __argz_delete (char **__restrict __argz,
+ size_t *__restrict __argz_len,
+- char *__restrict __entry) __THROW;
++ char *__restrict __entry) __attribute__ ((__nothrow__));
+ extern void argz_delete (char **__restrict __argz,
+ size_t *__restrict __argz_len,
+- char *__restrict __entry) __THROW;
++ char *__restrict __entry) __attribute__ ((__nothrow__));
+
+ /* Insert ENTRY into ARGZ & ARGZ_LEN before BEFORE, which should be an
+ existing entry in ARGZ; if BEFORE is NULL, ENTRY is appended to the end.
+@@ -138,11 +137,11 @@ extern void argz_delete (char **__restrict __argz,
+ extern error_t __argz_insert (char **__restrict __argz,
+ size_t *__restrict __argz_len,
+ char *__restrict __before,
+- __const char *__restrict __entry) __THROW;
++ __const char *__restrict __entry) __attribute__ ((__nothrow__));
+ extern error_t argz_insert (char **__restrict __argz,
+ size_t *__restrict __argz_len,
+ char *__restrict __before,
+- __const char *__restrict __entry) __THROW;
++ __const char *__restrict __entry) __attribute__ ((__nothrow__));
+
+ /* Replace any occurrences of the string STR in ARGZ with WITH, reallocating
+ ARGZ as necessary. If REPLACE_COUNT is non-zero, *REPLACE_COUNT will be
+@@ -173,9 +172,9 @@ extern error_t argz_replace (char **__restrict __argz,
+ ...;
+ */
+ extern char *__argz_next (__const char *__restrict __argz, size_t __argz_len,
+- __const char *__restrict __entry) __THROW;
++ __const char *__restrict __entry) __attribute__ ((__nothrow__));
+ extern char *argz_next (__const char *__restrict __argz, size_t __argz_len,
+- __const char *__restrict __entry) __THROW;
++ __const char *__restrict __entry) __attribute__ ((__nothrow__));
+
+ #ifdef __USE_EXTERN_INLINES
+ extern inline char *
+@@ -200,6 +199,8 @@ argz_next (__const char *__argz, size_t __argz_len,
+ }
+ #endif /* Use extern inlines. */
+
+-__END_DECLS
++#ifdef __cplusplus
++}
++#endif
+
+ #endif /* argz.h */