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| Commit | Line | Data |
|---|---|---|
| 1 | /* xmalloc.c -- safe versions of malloc and realloc */ | |
| 2 | ||
| 3 | /* Copyright (C) 1991-2003, 2022 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 | |
| 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 | #if defined (HAVE_CONFIG_H) | |
| 23 | #include <config.h> | |
| 24 | #endif | |
| 25 | ||
| 26 | #include <stdio.h> | |
| 27 | ||
| 28 | #if defined (HAVE_STDLIB_H) | |
| 29 | # include <stdlib.h> | |
| 30 | #else | |
| 31 | # include "ansi_stdlib.h" | |
| 32 | #endif /* HAVE_STDLIB_H */ | |
| 33 | ||
| 34 | /* Generic pointer type. */ | |
| 35 | #ifndef PTR_T | |
| 36 | # define PTR_T void * | |
| 37 | #endif /* PTR_T */ | |
| 38 | ||
| 39 | /* **************************************************************** */ | |
| 40 | /* */ | |
| 41 | /* Memory Allocation and Deallocation. */ | |
| 42 | /* */ | |
| 43 | /* **************************************************************** */ | |
| 44 | ||
| 45 | static void | |
| 46 | memory_error_and_abort (char *fname) | |
| 47 | { | |
| 48 | fprintf (stderr, "%s: out of virtual memory\n", fname); | |
| 49 | exit (2); | |
| 50 | } | |
| 51 | ||
| 52 | /* Return a pointer to free()able block of memory large enough | |
| 53 | to hold BYTES number of bytes. If the memory cannot be allocated, | |
| 54 | print an error message and abort. */ | |
| 55 | PTR_T | |
| 56 | xmalloc (size_t bytes) | |
| 57 | { | |
| 58 | PTR_T temp; | |
| 59 | ||
| 60 | temp = malloc (bytes); | |
| 61 | if (temp == 0) | |
| 62 | memory_error_and_abort ("xmalloc"); | |
| 63 | return (temp); | |
| 64 | } | |
| 65 | ||
| 66 | PTR_T | |
| 67 | xrealloc (PTR_T pointer, size_t bytes) | |
| 68 | { | |
| 69 | PTR_T temp; | |
| 70 | ||
| 71 | temp = pointer ? realloc (pointer, bytes) : malloc (bytes); | |
| 72 | ||
| 73 | if (temp == 0) | |
| 74 | memory_error_and_abort ("xrealloc"); | |
| 75 | return (temp); | |
| 76 | } | |
| 77 | ||
| 78 | void | |
| 79 | xfree (PTR_T string) | |
| 80 | { | |
| 81 | if (string) | |
| 82 | free (string); | |
| 83 | } |