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comparison mupdf-source/thirdparty/harfbuzz/src/failing-alloc.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*
2 * Copyright © 2020 Ebrahim Byagowi
3 *
4 * This is part of HarfBuzz, a text shaping library.
5 *
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
11 *
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16 * DAMAGE.
17 *
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23 */
24
25 #include <stdlib.h>
26 #include <stdio.h>
27
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31
32 int alloc_state = 0;
33
34 __attribute__((no_sanitize("integer")))
35 static int fastrand ()
36 {
37 if (!alloc_state) return 1;
38 /* Based on https://software.intel.com/content/www/us/en/develop/articles/fast-random-number-generator-on-the-intel-pentiumr-4-processor.html */
39 alloc_state = (214013 * alloc_state + 2531011);
40 return (alloc_state >> 16) & 0x7FFF;
41 }
42
43 void* hb_malloc_impl (size_t size)
44 {
45 return (fastrand () % 16) ? malloc (size) : NULL;
46 }
47
48 void* hb_calloc_impl (size_t nmemb, size_t size)
49 {
50 return (fastrand () % 16) ? calloc (nmemb, size) : NULL;
51 }
52
53 void* hb_realloc_impl (void *ptr, size_t size)
54 {
55 return (fastrand () % 16) ? realloc (ptr, size) : NULL;
56 }
57
58 void hb_free_impl (void *ptr)
59 {
60 return free (ptr);
61 }
62
63 #ifdef __cplusplus
64 }
65 #endif