1 /* Test of malloc function. 2 Copyright (C) 2010-2021 Free Software Foundation, Inc. 3 4 This program is free software: you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 16 17 #include <config.h> 18 19 /* Specification. */ 20 #include <stdlib.h> 21 22 #include <errno.h> 23 #include <stdint.h> 24 25 #include "macros.h" 26 27 int 28 main (int argc, char **argv) /* */ 29 { 30 /* Check that malloc (0) is not a NULL pointer. */ 31 void *volatile p = malloc (0); 32 ASSERT (p != NULL); 33 free (p); 34 35 /* Check that malloc (n) fails when n exceeds PTRDIFF_MAX. */ 36 if (PTRDIFF_MAX < SIZE_MAX) 37 { 38 size_t one = argc != 12345; 39 p = malloc (PTRDIFF_MAX + one); 40 ASSERT (p == NULL); 41 ASSERT (errno == ENOMEM); 42 } 43 44 return 0; 45 }