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 2, 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, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ 21 #define READLINE_LIBRARY 22 23 #if defined (HAVE_CONFIG_H) 24 #include <config.h> 25 #endif 26 27 #include <stdio.h> 28 29 #if defined (HAVE_STDLIB_H) 30 # include <stdlib.h> 31 #else 32 # include "ansi_stdlib.h" 33 #endif /* HAVE_STDLIB_H */ 34 35 #include "xmalloc.h" 36 37 /* **************************************************************** */ 38 /* */ 39 /* Memory Allocation and Deallocation. */ 40 /* */ 41 /* **************************************************************** */ 42 43 /* Return a pointer to free()able block of memory large enough 44 to hold BYTES number of bytes. If the memory cannot be allocated, 45 print an error message and abort. */ 46 PTR_T 47 xmalloc (bytes) 48 size_t bytes; 49 { 50 PTR_T temp; 51 52 temp = malloc (bytes); 53 if (temp == 0) 54 memory_error_and_abort ("xmalloc"); 55 return (temp); 56 } 57 58 PTR_T 59 xrealloc (pointer, bytes) 60 PTR_T pointer; 61 size_t bytes; 62 { 63 PTR_T temp; 64 65 temp = pointer ? realloc (pointer, bytes) : malloc (bytes); 66 67 if (temp == 0) 68 memory_error_and_abort ("xrealloc"); 69 return (temp); 70 } 71 72 /* Use this as the function to call when adding unwind protects so we 73 don't need to know what free() returns. */ 74 void 75 xfree (string) 76 PTR_T string; 77 { 78 if (string) 79 free (string); 80 } 81