| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Test for pvalloc. |
| 2 | Copyright (C) 2013-2016 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <errno.h> |
| 20 | #include <malloc.h> |
| 21 | #include <stdio.h> |
| 22 | #include <string.h> |
| 23 | #include <unistd.h> |
| 24 | |
| 25 | static int errors = 0; |
| 26 | |
| 27 | static void |
| 28 | merror (const char *msg) |
| 29 | { |
| 30 | ++errors; |
| 31 | printf ("Error: %s\n", msg); |
| 32 | } |
| 33 | |
| 34 | static int |
| 35 | do_test (void) |
| 36 | { |
| 37 | void *p; |
| 38 | unsigned long pagesize = getpagesize (); |
| 39 | unsigned long ptrval; |
| 40 | int save; |
| 41 | |
| 42 | errno = 0; |
| 43 | |
| 44 | /* An attempt to allocate a huge value should return NULL and set |
| 45 | errno to ENOMEM. */ |
| 46 | p = pvalloc (-1); |
| 47 | |
| 48 | save = errno; |
| 49 | |
| 50 | if (p != NULL) |
| 51 | merror ("pvalloc (-1) succeeded."); |
| 52 | |
| 53 | if (p == NULL && save != ENOMEM) |
| 54 | merror ("pvalloc (-1) errno is not set correctly"); |
| 55 | |
| 56 | free (p); |
| 57 | |
| 58 | errno = 0; |
| 59 | |
| 60 | /* Test to expose integer overflow in malloc internals from BZ #15855. */ |
| 61 | p = pvalloc (-pagesize); |
| 62 | |
| 63 | save = errno; |
| 64 | |
| 65 | if (p != NULL) |
| 66 | merror ("pvalloc (-pagesize) succeeded."); |
| 67 | |
| 68 | if (p == NULL && save != ENOMEM) |
| 69 | merror ("pvalloc (-pagesize) errno is not set correctly"); |
| 70 | |
| 71 | free (p); |
| 72 | |
| 73 | /* A zero-sized allocation should succeed with glibc, returning a |
| 74 | non-NULL value. */ |
| 75 | p = pvalloc (0); |
| 76 | |
| 77 | if (p == NULL) |
| 78 | merror ("pvalloc (0) failed."); |
| 79 | |
| 80 | free (p); |
| 81 | |
| 82 | /* Check the alignment of the returned pointer is correct. */ |
| 83 | p = pvalloc (32); |
| 84 | |
| 85 | if (p == NULL) |
| 86 | merror ("pvalloc (32) failed."); |
| 87 | |
| 88 | ptrval = (unsigned long) p; |
| 89 | |
| 90 | if ((ptrval & (pagesize - 1)) != 0) |
| 91 | merror ("returned pointer is not page aligned."); |
| 92 | |
| 93 | free (p); |
| 94 | |
| 95 | return errors != 0; |
| 96 | } |
| 97 | |
| 98 | #define TEST_FUNCTION do_test () |
| 99 | #include "../test-skeleton.c" |