[deliverable/binutils-gdb.git] / readline / xmalloc.c

/* xmalloc.c -- safe versions of malloc and realloc */

/* Copyright (C) 1991 Free Software Foundation, Inc.

   This file is part of GNU Readline, a library for reading lines
   of text with interactive input and history editing.

   Readline 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 1, or (at your option) any
   later version.

   Readline 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 Readline; see the file COPYING.  If not, write to the Free
   Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */

#if defined (ALREADY_HAVE_XMALLOC)
#else
#include <stdio.h>

#if defined (HAVE_STDLIB_H)
#  include <stdlib.h>
#endif /* HAVE_STDLIB_H */

static void memory_error_and_abort ();

/* **************************************************************** */
/*								    */
/*		   Memory Allocation and Deallocation.		    */
/*								    */
/* **************************************************************** */

/* Return a pointer to free()able block of memory large enough
   to hold BYTES number of bytes.  If the memory cannot be allocated,
   print an error message and abort. */
char *
xmalloc (bytes)
     int bytes;
{
  char *temp = (char *)malloc (bytes);

  if (!temp)
    memory_error_and_abort ("xmalloc");
  return (temp);
}

char *
xrealloc (pointer, bytes)
     char *pointer;
     int bytes;
{
  char *temp;

  if (!pointer)
    temp = (char *)malloc (bytes);
  else
    temp = (char *)realloc (pointer, bytes);

  if (!temp)
    memory_error_and_abort ("xrealloc");
  return (temp);
}

static void
memory_error_and_abort (fname)
     char *fname;
{
  fprintf (stderr, "%s: Out of virtual memory!\n", fname);
  abort ();
}
#endif /* !ALREADY_HAVE_XMALLOC */
Commit	Line	Data
5e98bbab PB	1	/* xmalloc.c -- safe versions of malloc and realloc */
	2
	3	/* Copyright (C) 1991 Free Software Foundation, Inc.
	4
	5	This file is part of GNU Readline, a library for reading lines
	6	of text with interactive input and history editing.
	7
	8	Readline is free software; you can redistribute it and/or modify it
	9	under the terms of the GNU General Public License as published by the
	10	Free Software Foundation; either version 1, or (at your option) any
	11	later version.
	12
	13	Readline is distributed in the hope that it will be useful, but
	14	WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with Readline; see the file COPYING. If not, write to the Free
	20	Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
	21
	22	#if defined (ALREADY_HAVE_XMALLOC)
	23	#else
	24	#include <stdio.h>
	25
	26	#if defined (HAVE_STDLIB_H)
	27	# include <stdlib.h>
	28	#endif /* HAVE_STDLIB_H */
	29
	30	static void memory_error_and_abort ();
	31
	32	/* **************************************************************** */
	33	/* */
	34	/* Memory Allocation and Deallocation. */
	35	/* */
	36	/* **************************************************************** */
	37
	38	/* Return a pointer to free()able block of memory large enough
	39	to hold BYTES number of bytes. If the memory cannot be allocated,
	40	print an error message and abort. */
	41	char *
	42	xmalloc (bytes)
	43	int bytes;
	44	{
	45	char temp = (char )malloc (bytes);
	46
	47	if (!temp)
	48	memory_error_and_abort ("xmalloc");
	49	return (temp);
	50	}
	51
	52	char *
	53	xrealloc (pointer, bytes)
	54	char *pointer;
	55	int bytes;
	56	{
	57	char *temp;
	58
	59	if (!pointer)
	60	temp = (char *)malloc (bytes);
	61	else
	62	temp = (char *)realloc (pointer, bytes);
	63
	64	if (!temp)
65	memory_error_and_abort ("xrealloc");
66	return (temp);
67	}
68
69	static void
70	memory_error_and_abort (fname)
71	char *fname;
72	{
73	fprintf (stderr, "%s: Out of virtual memory!\n", fname);
74	abort ();
75	}
76	#endif /* !ALREADY_HAVE_XMALLOC */