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Name	Size	Mode	Actions
arpa/	-	0755	rm
asm/	-	0755	rm
asm-generic/	-	0755	rm
bits/	-	0755	rm
bsock/	-	0755	rm
c++/	-	0755	rm
curl/	-	0755	rm
drm/	-	0755	rm
et/	-	0755	rm
finclude/	-	0755	rm
fwctl/	-	0755	rm
gdb/	-	0755	rm
gnu/	-	0755	rm
gssapi/	-	0755	rm
gssrpc/	-	0755	rm
kadm5/	-	0755	rm
krb5/	-	0755	rm
libxml2/	-	0755	rm
linux/	-	0755	rm
lzma/	-	0755	rm
misc/	-	0755	rm
mtd/	-	0755	rm
net/	-	0755	rm
netash/	-	0755	rm
netatalk/	-	0755	rm
netax25/	-	0755	rm
neteconet/	-	0755	rm
netinet/	-	0755	rm
netipx/	-	0755	rm
netiucv/	-	0755	rm
netpacket/	-	0755	rm
netrom/	-	0755	rm
netrose/	-	0755	rm
nfs/	-	0755	rm
nghttp2/	-	0755	rm
offload/	-	0755	rm
openssl/	-	0755	rm
pcp/	-	0755	rm
protocols/	-	0755	rm
python3.9/	-	0755	rm
rdma/	-	0755	rm
rpc/	-	0755	rm
sasl/	-	0755	rm
scsi/	-	0755	rm
selinux/	-	0755	rm
sepol/	-	0755	rm
sound/	-	0755	rm
sys/	-	0755	rm
video/	-	0755	rm
xen/	-	0755	rm
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aio.h	7738	0644	edit dl rm
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alloca.h	1203	0644	edit dl rm
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crypt.h	11160	0644	edit dl rm
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dirent.h	12617	0644	edit dl rm
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elf.h	182542	0644	edit dl rm
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fpu_control.h	3584	0644	edit dl rm
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gnu-versions.h	2343	0644	edit dl rm
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iconv.h	1858	0644	edit dl rm
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kdb.h	64333	0644	edit dl rm
keyutils.h	11796	0644	edit dl rm
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krb5.h	402	0644	edit dl rm
langinfo.h	17849	0644	edit dl rm
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libssh2.h	60665	0644	edit dl rm
libssh2_publickey.h	4942	0644	edit dl rm
libssh2_sftp.h	17369	0644	edit dl rm
limits.h	5706	0644	edit dl rm
link.h	7801	0644	edit dl rm
locale.h	7675	0644	edit dl rm
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memory.h	956	0644	edit dl rm
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mysql	-	0	edit dl rm
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shadow.h	5472	0644	edit dl rm
signal.h	13040	0644	edit dl rm
slapi-plugin.h	38352	0644	edit dl rm
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stdint.h	8474	0644	edit dl rm
stdio.h	31411	0644	edit dl rm
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stdlib.h	36316	0644	edit dl rm
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uchar.h	2002	0644	edit dl rm
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Edit: /usr/include/obstack.h (21307B)

/* obstack.h - object stack macros
   Copyright (C) 1988-2021 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

/* Summary:

All the apparent functions defined here are macros. The idea
   is that you would use these pre-tested macros to solve a
   very specific set of problems, and they would run fast.
   Caution: no side-effects in arguments please!! They may be
   evaluated MANY times!!

These macros operate a stack of objects.  Each object starts life
   small, and may grow to maturity.  (Consider building a word syllable
   by syllable.)  An object can move while it is growing.  Once it has
   been "finished" it never changes address again.  So the "top of the
   stack" is typically an immature growing object, while the rest of the
   stack is of mature, fixed size and fixed address objects.

These routines grab large chunks of memory, using a function you
   supply, called 'obstack_chunk_alloc'.  On occasion, they free chunks,
   by calling 'obstack_chunk_free'.  You must define them and declare
   them before using any obstack macros.

Each independent stack is represented by a 'struct obstack'.
   Each of the obstack macros expects a pointer to such a structure
   as the first argument.

One motivation for this package is the problem of growing char strings
   in symbol tables.  Unless you are "fascist pig with a read-only mind"
   --Gosper's immortal quote from HAKMEM item 154, out of context--you
   would not like to put any arbitrary upper limit on the length of your
   symbols.

In practice this often means you will build many short symbols and a
   few long symbols.  At the time you are reading a symbol you don't know
   how long it is.  One traditional method is to read a symbol into a
   buffer, realloc()ating the buffer every time you try to read a symbol
   that is longer than the buffer.  This is beaut, but you still will
   want to copy the symbol from the buffer to a more permanent
   symbol-table entry say about half the time.

With obstacks, you can work differently.  Use one obstack for all symbol
   names.  As you read a symbol, grow the name in the obstack gradually.
   When the name is complete, finalize it.  Then, if the symbol exists already,
   free the newly read name.

The way we do this is to take a large chunk, allocating memory from
   low addresses.  When you want to build a symbol in the chunk you just
   add chars above the current "high water mark" in the chunk.  When you
   have finished adding chars, because you got to the end of the symbol,
   you know how long the chars are, and you can create a new object.
   Mostly the chars will not burst over the highest address of the chunk,
   because you would typically expect a chunk to be (say) 100 times as
   long as an average object.

In case that isn't clear, when we have enough chars to make up
   the object, THEY ARE ALREADY CONTIGUOUS IN THE CHUNK (guaranteed)
   so we just point to it where it lies.  No moving of chars is
   needed and this is the second win: potentially long strings need
   never be explicitly shuffled. Once an object is formed, it does not
   change its address during its lifetime.

When the chars burst over a chunk boundary, we allocate a larger
   chunk, and then copy the partly formed object from the end of the old
   chunk to the beginning of the new larger chunk.  We then carry on
   accreting characters to the end of the object as we normally would.

A special macro is provided to add a single char at a time to a
   growing object.  This allows the use of register variables, which
   break the ordinary 'growth' macro.

Summary:
	We allocate large chunks.
	We carve out one object at a time from the current chunk.
	Once carved, an object never moves.
	We are free to append data of any size to the currently
	  growing object.
	Exactly one object is growing in an obstack at any one time.
	You can run one obstack per control block.
	You may have as many control blocks as you dare.
	Because of the way we do it, you can "unwind" an obstack
	  back to a previous state. (You may remove objects much
	  as you would with a stack.)
 */

/* Don't do the contents of this file more than once.  */

#ifndef _OBSTACK_H
#define _OBSTACK_H 1

/* We need the type of a pointer subtraction.  If __PTRDIFF_TYPE__ is
   defined, as with GNU C, use that; that way we don't pollute the
   namespace with <stddef.h>'s symbols.  Otherwise, include <stddef.h>
   and use ptrdiff_t.  */

#ifdef __PTRDIFF_TYPE__
# define PTR_INT_TYPE __PTRDIFF_TYPE__
#else
# include <stddef.h>
# define PTR_INT_TYPE ptrdiff_t
#endif

/* If B is the base of an object addressed by P, return the result of
   aligning P to the next multiple of A + 1.  B and P must be of type
   char *.  A + 1 must be a power of 2.  */

#define __BPTR_ALIGN(B, P, A) ((B) + (((P) - (B) + (A)) & ~(A)))

/* Similar to _BPTR_ALIGN (B, P, A), except optimize the common case
   where pointers can be converted to integers, aligned as integers,
   and converted back again.  If PTR_INT_TYPE is narrower than a
   pointer (e.g., the AS/400), play it safe and compute the alignment
   relative to B.  Otherwise, use the faster strategy of computing the
   alignment relative to 0.  */

#define __PTR_ALIGN(B, P, A)						      \
  __BPTR_ALIGN (sizeof (PTR_INT_TYPE) < sizeof (void *) ? (B) : (char *) 0, \
		P, A)

#include <string.h>

#ifndef __attribute_pure__
# define __attribute_pure__ _GL_ATTRIBUTE_PURE
#endif

#ifdef __cplusplus
extern "C" {
#endif

struct _obstack_chunk           /* Lives at front of each chunk. */
{
  char *limit;                  /* 1 past end of this chunk */
  struct _obstack_chunk *prev;  /* address of prior chunk or NULL */
  char contents[4];             /* objects begin here */
};

struct obstack          /* control current object in current chunk */
{
  long chunk_size;              /* preferred size to allocate chunks in */
  struct _obstack_chunk *chunk; /* address of current struct obstack_chunk */
  char *object_base;            /* address of object we are building */
  char *next_free;              /* where to add next char to current object */
  char *chunk_limit;            /* address of char after current chunk */
  union
  {
    PTR_INT_TYPE tempint;
    void *tempptr;
  } temp;                       /* Temporary for some macros.  */
  int alignment_mask;           /* Mask of alignment for each object. */
  /* These prototypes vary based on 'use_extra_arg', and we use
     casts to the prototypeless function type in all assignments,
     but having prototypes here quiets -Wstrict-prototypes.  */
  struct _obstack_chunk *(*chunkfun) (void *, long);
  void (*freefun) (void *, struct _obstack_chunk *);
  void *extra_arg;              /* first arg for chunk alloc/dealloc funcs */
  unsigned use_extra_arg : 1;     /* chunk alloc/dealloc funcs take extra arg */
  unsigned maybe_empty_object : 1; /* There is a possibility that the current
				      chunk contains a zero-length object.  This
				      prevents freeing the chunk if we allocate
				      a bigger chunk to replace it. */
  unsigned alloc_failed : 1;      /* No longer used, as we now call the failed
				     handler on error, but retained for binary
				     compatibility.  */
};

/* Declare the external functions we use; they are in obstack.c.  */

extern void _obstack_newchunk (struct obstack *, int);
extern int _obstack_begin (struct obstack *, int, int,
			   void *(*)(long), void (*)(void *));
extern int _obstack_begin_1 (struct obstack *, int, int,
			     void *(*)(void *, long),
			     void (*)(void *, void *), void *);
extern int _obstack_memory_used (struct obstack *) __attribute_pure__;

/* The default name of the function for freeing a chunk is 'obstack_free',
   but gnulib users can override this by defining '__obstack_free'.  */
#ifndef __obstack_free
# define __obstack_free obstack_free
#endif
extern void __obstack_free (struct obstack *, void *);

/* Error handler called when 'obstack_chunk_alloc' failed to allocate
   more memory.  This can be set to a user defined function which
   should either abort gracefully or use longjump - but shouldn't
   return.  The default action is to print a message and abort.  */
extern void (*obstack_alloc_failed_handler) (void);

/* Exit value used when 'print_and_abort' is used.  */
extern int obstack_exit_failure;

/* Pointer to beginning of object being allocated or to be allocated next.
   Note that this might not be the final address of the object
   because a new chunk might be needed to hold the final size.  */

#define obstack_base(h) ((void *) (h)->object_base)

/* Size for allocating ordinary chunks.  */

#define obstack_chunk_size(h) ((h)->chunk_size)

/* Pointer to next byte not yet allocated in current chunk.  */

#define obstack_next_free(h)    ((h)->next_free)

/* Mask specifying low bits that should be clear in address of an object.  */

#define obstack_alignment_mask(h) ((h)->alignment_mask)

/* To prevent prototype warnings provide complete argument list.  */
#define obstack_init(h)							      \
  _obstack_begin ((h), 0, 0,						      \
		  (void *(*)(long))obstack_chunk_alloc,			      \
		  (void (*)(void *))obstack_chunk_free)

#define obstack_begin(h, size)						      \
  _obstack_begin ((h), (size), 0,					      \
		  (void *(*)(long))obstack_chunk_alloc,			      \
		  (void (*)(void *))obstack_chunk_free)

#define obstack_specify_allocation(h, size, alignment, chunkfun, freefun)  \
  _obstack_begin ((h), (size), (alignment),				      \
		  (void *(*)(long))(chunkfun),				      \
		  (void (*)(void *))(freefun))

#define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \
  _obstack_begin_1 ((h), (size), (alignment),				      \
		    (void *(*)(void *, long))(chunkfun),		      \
		    (void (*)(void *, void *))(freefun), (arg))

#define obstack_chunkfun(h, newchunkfun) \
  ((h)->chunkfun = (struct _obstack_chunk *(*)(void *, long))(newchunkfun))

#define obstack_freefun(h, newfreefun) \
  ((h)->freefun = (void (*)(void *, struct _obstack_chunk *))(newfreefun))

#define obstack_1grow_fast(h, achar) (*((h)->next_free)++ = (achar))

#define obstack_blank_fast(h, n) ((h)->next_free += (n))

#define obstack_memory_used(h) _obstack_memory_used (h)

#if defined __GNUC__
# if ! (2 < __GNUC__ + (8 <= __GNUC_MINOR__))
#  define __extension__
# endif

/* For GNU C, if not -traditional,
   we can define these macros to compute all args only once
   without using a global variable.
   Also, we can avoid using the 'temp' slot, to make faster code.  */

# define obstack_object_size(OBSTACK)					      \
  __extension__								      \
    ({ struct obstack const *__o = (OBSTACK);				      \
       (unsigned) (__o->next_free - __o->object_base); })

# define obstack_room(OBSTACK)						      \
  __extension__								      \
    ({ struct obstack const *__o = (OBSTACK);				      \
       (unsigned) (__o->chunk_limit - __o->next_free); })

# define obstack_make_room(OBSTACK, length)				      \
  __extension__								      \
    ({ struct obstack *__o = (OBSTACK);					      \
       int __len = (length);						      \
       if (__o->chunk_limit - __o->next_free < __len)			      \
	 _obstack_newchunk (__o, __len);				      \
       (void) 0; })

# define obstack_empty_p(OBSTACK)					      \
  __extension__								      \
    ({ struct obstack const *__o = (OBSTACK);				      \
       (__o->chunk->prev == 0						      \
	&& __o->next_free == __PTR_ALIGN ((char *) __o->chunk,		      \
					  __o->chunk->contents,		      \
					  __o->alignment_mask)); })

# define obstack_grow(OBSTACK, where, length)				      \
  __extension__								      \
    ({ struct obstack *__o = (OBSTACK);					      \
       int __len = (length);						      \
       if (__o->next_free + __len > __o->chunk_limit)			      \
	 _obstack_newchunk (__o, __len);				      \
       memcpy (__o->next_free, where, __len);				      \
       __o->next_free += __len;						      \
       (void) 0; })

# define obstack_grow0(OBSTACK, where, length)				      \
  __extension__								      \
    ({ struct obstack *__o = (OBSTACK);					      \
       int __len = (length);						      \
       if (__o->next_free + __len + 1 > __o->chunk_limit)		      \
	 _obstack_newchunk (__o, __len + 1);				      \
       memcpy (__o->next_free, where, __len);				      \
       __o->next_free += __len;						      \
       *(__o->next_free)++ = 0;						      \
       (void) 0; })

# define obstack_1grow(OBSTACK, datum)					      \
  __extension__								      \
    ({ struct obstack *__o = (OBSTACK);					      \
       if (__o->next_free + 1 > __o->chunk_limit)			      \
	 _obstack_newchunk (__o, 1);					      \
       obstack_1grow_fast (__o, datum);					      \
       (void) 0; })

/* These assume that the obstack alignment is good enough for pointers
   or ints, and that the data added so far to the current object
   shares that much alignment.  */

# define obstack_ptr_grow(OBSTACK, datum)				      \
  __extension__								      \
    ({ struct obstack *__o = (OBSTACK);					      \
       if (__o->next_free + sizeof (void *) > __o->chunk_limit)		      \
	 _obstack_newchunk (__o, sizeof (void *));			      \
       obstack_ptr_grow_fast (__o, datum); })				      \

# define obstack_int_grow(OBSTACK, datum)				      \
  __extension__								      \
    ({ struct obstack *__o = (OBSTACK);					      \
       if (__o->next_free + sizeof (int) > __o->chunk_limit)		      \
	 _obstack_newchunk (__o, sizeof (int));				      \
       obstack_int_grow_fast (__o, datum); })

# define obstack_ptr_grow_fast(OBSTACK, aptr)				      \
  __extension__								      \
    ({ struct obstack *__o1 = (OBSTACK);				      \
       void *__p1 = __o1->next_free;					      \
       *(const void **) __p1 = (aptr);					      \
       __o1->next_free += sizeof (const void *);			      \
       (void) 0; })

# define obstack_int_grow_fast(OBSTACK, aint)				      \
  __extension__								      \
    ({ struct obstack *__o1 = (OBSTACK);				      \
       void *__p1 = __o1->next_free;					      \
       *(int *) __p1 = (aint);						      \
       __o1->next_free += sizeof (int);					      \
       (void) 0; })

# define obstack_blank(OBSTACK, length)					      \
  __extension__								      \
    ({ struct obstack *__o = (OBSTACK);					      \
       int __len = (length);						      \
       if (__o->chunk_limit - __o->next_free < __len)			      \
	 _obstack_newchunk (__o, __len);				      \
       obstack_blank_fast (__o, __len);					      \
       (void) 0; })

# define obstack_alloc(OBSTACK, length)					      \
  __extension__								      \
    ({ struct obstack *__h = (OBSTACK);					      \
       obstack_blank (__h, (length));					      \
       obstack_finish (__h); })

# define obstack_copy(OBSTACK, where, length)				      \
  __extension__								      \
    ({ struct obstack *__h = (OBSTACK);					      \
       obstack_grow (__h, (where), (length));				      \
       obstack_finish (__h); })

# define obstack_copy0(OBSTACK, where, length)				      \
  __extension__								      \
    ({ struct obstack *__h = (OBSTACK);					      \
       obstack_grow0 (__h, (where), (length));				      \
       obstack_finish (__h); })

/* The local variable is named __o1 to avoid a name conflict
   when obstack_blank is called.  */
# define obstack_finish(OBSTACK)					      \
  __extension__								      \
    ({ struct obstack *__o1 = (OBSTACK);				      \
       void *__value = (void *) __o1->object_base;			      \
       if (__o1->next_free == __value)					      \
	 __o1->maybe_empty_object = 1;					      \
       __o1->next_free							      \
	 = __PTR_ALIGN (__o1->object_base, __o1->next_free,		      \
			__o1->alignment_mask);				      \
       if (__o1->next_free - (char *) __o1->chunk			      \
	   > __o1->chunk_limit - (char *) __o1->chunk)			      \
	 __o1->next_free = __o1->chunk_limit;				      \
       __o1->object_base = __o1->next_free;				      \
       __value; })

# define obstack_free(OBSTACK, OBJ)					      \
  __extension__								      \
    ({ struct obstack *__o = (OBSTACK);					      \
       void *__obj = (OBJ);						      \
       if (__obj > (void *) __o->chunk && __obj < (void *) __o->chunk_limit)  \
	 __o->next_free = __o->object_base = (char *) __obj;		      \
       else (__obstack_free) (__o, __obj); })

#else /* not __GNUC__ */

# define obstack_object_size(h) \
  (unsigned) ((h)->next_free - (h)->object_base)

# define obstack_room(h)						      \
  (unsigned) ((h)->chunk_limit - (h)->next_free)

# define obstack_empty_p(h) \
  ((h)->chunk->prev == 0						      \
   && (h)->next_free == __PTR_ALIGN ((char *) (h)->chunk,		      \
				     (h)->chunk->contents,		      \
				     (h)->alignment_mask))

/* Note that the call to _obstack_newchunk is enclosed in (..., 0)
   so that we can avoid having void expressions
   in the arms of the conditional expression.
   Casting the third operand to void was tried before,
   but some compilers won't accept it.  */

# define obstack_make_room(h, length)					      \
  ((h)->temp.tempint = (length),					      \
   (((h)->next_free + (h)->temp.tempint > (h)->chunk_limit)		      \
   ? (_obstack_newchunk ((h), (h)->temp.tempint), 0) : 0))

# define obstack_grow(h, where, length)					      \
  ((h)->temp.tempint = (length),					      \
   (((h)->next_free + (h)->temp.tempint > (h)->chunk_limit)		      \
   ? (_obstack_newchunk ((h), (h)->temp.tempint), 0) : 0),		      \
   memcpy ((h)->next_free, where, (h)->temp.tempint),			      \
   (h)->next_free += (h)->temp.tempint)

# define obstack_grow0(h, where, length)				      \
  ((h)->temp.tempint = (length),					      \
   (((h)->next_free + (h)->temp.tempint + 1 > (h)->chunk_limit)		      \
   ? (_obstack_newchunk ((h), (h)->temp.tempint + 1), 0) : 0),		      \
   memcpy ((h)->next_free, where, (h)->temp.tempint),			      \
   (h)->next_free += (h)->temp.tempint,					      \
   *((h)->next_free)++ = 0)

# define obstack_1grow(h, datum)					      \
  ((((h)->next_free + 1 > (h)->chunk_limit)				      \
    ? (_obstack_newchunk ((h), 1), 0) : 0),				      \
   obstack_1grow_fast (h, datum))

# define obstack_ptr_grow(h, datum)					      \
  ((((h)->next_free + sizeof (char *) > (h)->chunk_limit)		      \
    ? (_obstack_newchunk ((h), sizeof (char *)), 0) : 0),		      \
   obstack_ptr_grow_fast (h, datum))

# define obstack_int_grow(h, datum)					      \
  ((((h)->next_free + sizeof (int) > (h)->chunk_limit)			      \
    ? (_obstack_newchunk ((h), sizeof (int)), 0) : 0),			      \
   obstack_int_grow_fast (h, datum))

# define obstack_ptr_grow_fast(h, aptr)					      \
  (((const void **) ((h)->next_free += sizeof (void *)))[-1] = (aptr))

# define obstack_int_grow_fast(h, aint)					      \
  (((int *) ((h)->next_free += sizeof (int)))[-1] = (aint))

# define obstack_blank(h, length)					      \
  ((h)->temp.tempint = (length),					      \
   (((h)->chunk_limit - (h)->next_free < (h)->temp.tempint)		      \
   ? (_obstack_newchunk ((h), (h)->temp.tempint), 0) : 0),		      \
   obstack_blank_fast (h, (h)->temp.tempint))

# define obstack_alloc(h, length)					      \
  (obstack_blank ((h), (length)), obstack_finish ((h)))

# define obstack_copy(h, where, length)					      \
  (obstack_grow ((h), (where), (length)), obstack_finish ((h)))

# define obstack_copy0(h, where, length)				      \
  (obstack_grow0 ((h), (where), (length)), obstack_finish ((h)))

# define obstack_finish(h)						      \
  (((h)->next_free == (h)->object_base					      \
    ? (((h)->maybe_empty_object = 1), 0)				      \
    : 0),								      \
   (h)->temp.tempptr = (h)->object_base,				      \
   (h)->next_free							      \
     = __PTR_ALIGN ((h)->object_base, (h)->next_free,			      \
		    (h)->alignment_mask),				      \
   (((h)->next_free - (char *) (h)->chunk				      \
     > (h)->chunk_limit - (char *) (h)->chunk)				      \
   ? ((h)->next_free = (h)->chunk_limit) : 0),				      \
   (h)->object_base = (h)->next_free,					      \
   (h)->temp.tempptr)

# define obstack_free(h, obj)						      \
  ((h)->temp.tempint = (char *) (obj) - (char *) (h)->chunk,		      \
   ((((h)->temp.tempint > 0						      \
      && (h)->temp.tempint < (h)->chunk_limit - (char *) (h)->chunk))	      \
    ? (void) ((h)->next_free = (h)->object_base				      \
	      = (h)->temp.tempint + (char *) (h)->chunk)		      \
    : (__obstack_free) (h, (h)->temp.tempint + (char *) (h)->chunk)))

#endif /* not __GNUC__ */

#ifdef __cplusplus
}       /* C++ */
#endif

#endif /* obstack.h */

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