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fd860eaaa8
This is fairly complicated, not because the users of __need_Emath and __need_error_t have complicated requirements, but because the core changes had a lot of fallout. __need_error_t exists for gnulib compatibility in argz.h and argp.h. error_t itself is a Hurdism, an enum containing all the E-constants, so you can do 'p (error_t) errno' in gdb and get a symbolic value. argz.h and argp.h use it for function return values, and they want to fall back to 'int' when that's not available. There is no reason why these nonstandard headers cannot just go ahead and include all of errno.h; so we do that. __need_Emath is defined only by .S files; what they _really_ need is for errno.h to avoid declaring anything other than the E-constants (e.g. 'extern int __errno_location(void);' is a syntax error in assembly language). This is replaced with a check for __ASSEMBLER__ in errno.h, plus a carefully documented requirement for bits/errno.h not to define anything other than macros. That in turn has the consequence that bits/errno.h must not define errno - fortunately, all live ports use the same definition of errno, so I've moved it to errno.h. The Hurd bits/errno.h must also take care not to define error_t when __ASSEMBLER__ is defined, which involves repeating all of the definitions twice, but it's a generated file so that's okay. * stdlib/errno.h: Remove __need_Emath and __need_error_t logic. Reorganize file. Declare errno here. When __ASSEMBLER__ is defined, don't declare anything other than the E-constants. * include/errno.h: Change conditional for exposing internal declarations to (not _ISOMAC and not __ASSEMBLER__). * bits/errno.h: Remove logic for __need_Emath. Document requirements for a port-specific bits/errno.h. * sysdeps/unix/sysv/linux/bits/errno.h * sysdeps/unix/sysv/linux/alpha/bits/errno.h * sysdeps/unix/sysv/linux/hppa/bits/errno.h * sysdeps/unix/sysv/linux/mips/bits/errno.h * sysdeps/unix/sysv/linux/sparc/bits/errno.h: Add multiple-include guard and check against improper inclusion. Remove __need_Emath logic. Don't declare errno here. Ensure all constants are defined as simple integer literals. Consistent formatting. * sysdeps/mach/hurd/errnos.awk: Likewise. Only define error_t and enum __error_t_codes if __ASSEMBLER__ is not defined. * sysdeps/mach/hurd/bits/errno.h: Regenerate. * argp/argp.h, string/argz.h: Don't define __need_error_t before including errno.h. * sysdeps/i386/i686/fpu/multiarch/s_cosf-sse2.S * sysdeps/i386/i686/fpu/multiarch/s_sincosf-sse2.S * sysdeps/i386/i686/fpu/multiarch/s_sinf-sse2.S * sysdeps/x86_64/fpu/s_cosf.S * sysdeps/x86_64/fpu/s_sincosf.S * sysdeps/x86_64/fpu/s_sinf.S: Just include errno.h; don't define __need_Emath or include bits/errno.h directly.
183 lines
7.0 KiB
C
183 lines
7.0 KiB
C
/* Routines for dealing with '\0' separated arg vectors.
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Copyright (C) 1995-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _ARGZ_H
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#define _ARGZ_H 1
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#include <features.h>
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#include <errno.h>
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#include <string.h> /* Need size_t, and strchr is called below. */
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__BEGIN_DECLS
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/* error_t may or may not be available from errno.h, depending on the
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operating system. */
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#ifndef __error_t_defined
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# define __error_t_defined 1
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typedef int error_t;
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#endif
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/* Make a '\0' separated arg vector from a unix argv vector, returning it in
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ARGZ, and the total length in LEN. If a memory allocation error occurs,
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ENOMEM is returned, otherwise 0. The result can be destroyed using free. */
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extern error_t __argz_create (char *const __argv[], char **__restrict __argz,
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size_t *__restrict __len) __THROW;
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extern error_t argz_create (char *const __argv[], char **__restrict __argz,
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size_t *__restrict __len) __THROW;
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/* Make a '\0' separated arg vector from a SEP separated list in
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STRING, returning it in ARGZ, and the total length in LEN. If a
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memory allocation error occurs, ENOMEM is returned, otherwise 0.
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The result can be destroyed using free. */
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extern error_t __argz_create_sep (const char *__restrict __string,
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int __sep, char **__restrict __argz,
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size_t *__restrict __len) __THROW;
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extern error_t argz_create_sep (const char *__restrict __string,
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int __sep, char **__restrict __argz,
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size_t *__restrict __len) __THROW;
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/* Returns the number of strings in ARGZ. */
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extern size_t __argz_count (const char *__argz, size_t __len)
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__THROW __attribute_pure__;
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extern size_t argz_count (const char *__argz, size_t __len)
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__THROW __attribute_pure__;
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/* Puts pointers to each string in ARGZ into ARGV, which must be large enough
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to hold them all. */
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extern void __argz_extract (const char *__restrict __argz, size_t __len,
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char **__restrict __argv) __THROW;
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extern void argz_extract (const char *__restrict __argz, size_t __len,
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char **__restrict __argv) __THROW;
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/* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
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except the last into the character SEP. */
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extern void __argz_stringify (char *__argz, size_t __len, int __sep) __THROW;
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extern void argz_stringify (char *__argz, size_t __len, int __sep) __THROW;
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/* Append BUF, of length BUF_LEN to the argz vector in ARGZ & ARGZ_LEN. */
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extern error_t __argz_append (char **__restrict __argz,
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size_t *__restrict __argz_len,
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const char *__restrict __buf, size_t __buf_len)
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__THROW;
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extern error_t argz_append (char **__restrict __argz,
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size_t *__restrict __argz_len,
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const char *__restrict __buf, size_t __buf_len)
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__THROW;
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/* Append STR to the argz vector in ARGZ & ARGZ_LEN. */
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extern error_t __argz_add (char **__restrict __argz,
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size_t *__restrict __argz_len,
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const char *__restrict __str) __THROW;
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extern error_t argz_add (char **__restrict __argz,
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size_t *__restrict __argz_len,
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const char *__restrict __str) __THROW;
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/* Append SEP separated list in STRING to the argz vector in ARGZ &
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ARGZ_LEN. */
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extern error_t __argz_add_sep (char **__restrict __argz,
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size_t *__restrict __argz_len,
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const char *__restrict __string, int __delim)
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__THROW;
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extern error_t argz_add_sep (char **__restrict __argz,
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size_t *__restrict __argz_len,
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const char *__restrict __string, int __delim)
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__THROW;
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/* Delete ENTRY from ARGZ & ARGZ_LEN, if it appears there. */
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extern void __argz_delete (char **__restrict __argz,
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size_t *__restrict __argz_len,
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char *__restrict __entry) __THROW;
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extern void argz_delete (char **__restrict __argz,
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size_t *__restrict __argz_len,
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char *__restrict __entry) __THROW;
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/* Insert ENTRY into ARGZ & ARGZ_LEN before BEFORE, which should be an
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existing entry in ARGZ; if BEFORE is NULL, ENTRY is appended to the end.
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Since ARGZ's first entry is the same as ARGZ, argz_insert (ARGZ, ARGZ_LEN,
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ARGZ, ENTRY) will insert ENTRY at the beginning of ARGZ. If BEFORE is not
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in ARGZ, EINVAL is returned, else if memory can't be allocated for the new
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ARGZ, ENOMEM is returned, else 0. */
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extern error_t __argz_insert (char **__restrict __argz,
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size_t *__restrict __argz_len,
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char *__restrict __before,
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const char *__restrict __entry) __THROW;
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extern error_t argz_insert (char **__restrict __argz,
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size_t *__restrict __argz_len,
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char *__restrict __before,
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const char *__restrict __entry) __THROW;
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/* Replace any occurrences of the string STR in ARGZ with WITH, reallocating
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ARGZ as necessary. If REPLACE_COUNT is non-zero, *REPLACE_COUNT will be
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incremented by number of replacements performed. */
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extern error_t __argz_replace (char **__restrict __argz,
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size_t *__restrict __argz_len,
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const char *__restrict __str,
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const char *__restrict __with,
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unsigned int *__restrict __replace_count);
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extern error_t argz_replace (char **__restrict __argz,
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size_t *__restrict __argz_len,
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const char *__restrict __str,
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const char *__restrict __with,
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unsigned int *__restrict __replace_count);
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/* Returns the next entry in ARGZ & ARGZ_LEN after ENTRY, or NULL if there
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are no more. If entry is NULL, then the first entry is returned. This
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behavior allows two convenient iteration styles:
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char *entry = 0;
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while ((entry = argz_next (argz, argz_len, entry)))
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...;
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or
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char *entry;
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for (entry = argz; entry; entry = argz_next (argz, argz_len, entry))
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...;
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*/
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extern char *__argz_next (const char *__restrict __argz, size_t __argz_len,
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const char *__restrict __entry) __THROW;
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extern char *argz_next (const char *__restrict __argz, size_t __argz_len,
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const char *__restrict __entry) __THROW;
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#ifdef __USE_EXTERN_INLINES
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__extern_inline char *
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__NTH (__argz_next (const char *__argz, size_t __argz_len,
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const char *__entry))
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{
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if (__entry)
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{
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if (__entry < __argz + __argz_len)
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__entry = strchr (__entry, '\0') + 1;
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return __entry >= __argz + __argz_len ? (char *) NULL : (char *) __entry;
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}
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else
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return __argz_len > 0 ? (char *) __argz : 0;
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}
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__extern_inline char *
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__NTH (argz_next (const char *__argz, size_t __argz_len,
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const char *__entry))
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{
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return __argz_next (__argz, __argz_len, __entry);
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}
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#endif /* Use extern inlines. */
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__END_DECLS
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#endif /* argz.h */
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