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readline 8.1

    1: /* xmalloc.c -- safe versions of malloc and realloc */
    2: 
    3: /* Copyright (C) 1991-2017 Free Software Foundation, Inc.
    4: 
    5:    This file is part of the GNU Readline Library (Readline), a library
    6:    for reading lines of text with interactive input and history editing.      
    7: 
    8:    Readline is free software: you can redistribute it and/or modify
    9:    it under the terms of the GNU General Public License as published by
   10:    the Free Software Foundation, either version 3 of the License, or
   11:    (at your option) any later version.
   12: 
   13:    Readline is distributed in the hope that it will be useful,
   14:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   15:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   16:    GNU General Public License for more details.
   17: 
   18:    You should have received a copy of the GNU General Public License
   19:    along with Readline.  If not, see <http://www.gnu.org/licenses/>.
   20: */
   21: 
   22: #define READLINE_LIBRARY
   23: 
   24: #if defined (HAVE_CONFIG_H)
   25: #include <config.h>
   26: #endif
   27: 
   28: #include <stdio.h>
   29: 
   30: #if defined (HAVE_STDLIB_H)
   31: #  include <stdlib.h>
   32: #else
   33: #  include "ansi_stdlib.h"
   34: #endif /* HAVE_STDLIB_H */
   35: 
   36: #include "xmalloc.h"
   37: 
   38: /* **************************************************************** */
   39: /*								    */
   40: /*		   Memory Allocation and Deallocation.		    */
   41: /*								    */
   42: /* **************************************************************** */
   43: 
   44: static void
   45: memory_error_and_abort (char *fname)
   46: {
   47:   fprintf (stderr, "%s: out of virtual memory\n", fname);
   48:   exit (2);
   49: }
   50: 
   51: /* Return a pointer to free()able block of memory large enough
   52:    to hold BYTES number of bytes.  If the memory cannot be allocated,
   53:    print an error message and abort. */
   54: PTR_T
   55: xmalloc (size_t bytes)
   56: {
   57:   PTR_T temp;
   58: 
   59:   temp = malloc (bytes);
   60:   if (temp == 0)
   61:     memory_error_and_abort ("xmalloc");
   62:   return (temp);
   63: }
   64: 
   65: PTR_T
   66: xrealloc (PTR_T pointer, size_t bytes)
   67: {
   68:   PTR_T temp;
   69: 
   70:   temp = pointer ? realloc (pointer, bytes) : malloc (bytes);
   71: 
   72:   if (temp == 0)
   73:     memory_error_and_abort ("xrealloc");
   74:   return (temp);
   75: }