| /* Test of reallocarray function. |
| Copyright (C) 2010-2021 Free Software Foundation, Inc. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| #include <config.h> |
| |
| /* Specification. */ |
| #include <stdlib.h> |
| |
| #include <errno.h> |
| #include <stdint.h> |
| |
| #include "signature.h" |
| SIGNATURE_CHECK (reallocarray, void *, (void *, size_t, size_t)); |
| |
| #include "macros.h" |
| |
| int |
| main () |
| { |
| /* Check that reallocarray fails when requested to allocate a block |
| of memory larger than PTRDIFF_MAX or SIZE_MAX bytes. */ |
| for (size_t n = 2; n != 0; n <<= 1) |
| { |
| void *volatile p = NULL; |
| |
| p = reallocarray (p, PTRDIFF_MAX / n + 1, n); |
| ASSERT (p == NULL); |
| ASSERT (errno == ENOMEM); |
| |
| p = reallocarray (p, SIZE_MAX / n + 1, n); |
| ASSERT (p == NULL); |
| ASSERT (errno == ENOMEM |
| || errno == EOVERFLOW /* NetBSD */); |
| |
| /* Reallocarray should not crash with zero sizes. */ |
| p = reallocarray (p, 0, n); |
| p = reallocarray (p, n, 0); |
| free (p); |
| } |
| |
| return 0; |
| } |