+
−/* Memory allocation with expensive empty allocations.
+
−   Copyright (C) 2003, 2008, 2010-2013 Free Software Foundation, Inc.
+
−   Written by Bruno Haible <bruno@clisp.org>, 2003,
+
−   based on prior work by Jim Meyering.
+
−
+
−   This program is free software: you can redistribute it and/or modify
+
−   it under the terms of the GNU General Public License as published by
+
−   the Free Software Foundation; either version 3 of the License, or
+
−   (at your option) any later version.
+
−
+
−   This program 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 General Public License for more details.
+
−
+
−   You should have received a copy of the GNU General Public License
+
−   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
−
+
−#ifndef _EEALLOC_H
+
−#define _EEALLOC_H
+
−
+
−/* malloc() and realloc() are allowed to return NULL when asked to allocate
+
−   a memory block of 0 bytes; this is not an out-of-memory condition.
+
−   (See ISO C 99 section 7.20.3.)  In some places, this is not welcome,
+
−   because it requires extra checking (so as not to confuse a zero-sized
+
−   allocation with an out-of-memory condition).  This file provides
+
−   malloc()/realloc() workalikes which return non-NULL pointers for
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−   succeeding zero-sized allocations.  GNU libc already defines malloc()
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−   and realloc() this way; on such platforms the workalikes are aliased
+
−   to the original malloc()/realloc() functions.  */
+
−
+
−#include <stdlib.h>
+
−
+
−_GL_INLINE_HEADER_BEGIN
+
−#ifndef EEALLOC_INLINE
+
−# define EEALLOC_INLINE _GL_INLINE
+
−#endif
+
−
+
−#if MALLOC_0_IS_NONNULL
+
−# define eemalloc malloc
+
−#else
+
−# if __GNUC__ >= 3
+
−EEALLOC_INLINE void *eemalloc (size_t n)
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−     __attribute__ ((__malloc__))
+
−#  if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
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−     __attribute__ ((__alloc_size__ (1)))
+
−#  endif
+
−  ;
+
−# endif
+
−EEALLOC_INLINE void *
+
−eemalloc (size_t n)
+
−{
+
−  /* If n is zero, allocate a 1-byte block.  */
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−  if (n == 0)
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−    n = 1;
+
−  return malloc (n);
+
−}
+
−#endif
+
−
+
−#if REALLOC_0_IS_NONNULL
+
−# define eerealloc realloc
+
−#else
+
−# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
+
−EEALLOC_INLINE void *eerealloc (void *p, size_t n)
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−     __attribute__ ((__alloc_size__ (2)));
+
−# endif
+
−EEALLOC_INLINE void *
+
−eerealloc (void *p, size_t n)
+
−{
+
−  /* If n is zero, allocate or keep a 1-byte block.  */
+
−  if (n == 0)
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−    n = 1;
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−  return realloc (p, n);
+
−}
+
−#endif
+
−
+
−/* Maybe we should also define variants
+
−    eenmalloc (size_t n, size_t s) - behaves like eemalloc (n * s)
+
−    eezalloc (size_t n) - like eemalloc followed by memset 0
+
−    eecalloc (size_t n, size_t s) - like eemalloc (n * s) followed by memset 0
+
−    eenrealloc (void *p, size_t n, size_t s) - like eerealloc (p, n * s)
+
−   If this would be useful in your application. please speak up.  */
+
−
+
−_GL_INLINE_HEADER_END
+
−
+
−#endif /* _EEALLOC_H */