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1 : /* Test of safe automatic memory allocation. 2 : Copyright (C) 2005, 2007, 2009-2020 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 : /* Written by Bruno Haible <bruno@clisp.org>, 2005. */ 18 : 19 : #include <config.h> 20 : 21 : #include "malloca.h" 22 : 23 : #include <stdlib.h> 24 : 25 : static void 26 500000 : do_allocation (int n) 27 : { 28 500000 : void *ptr = malloca (n); 29 500000 : freea (ptr); 30 500000 : safe_alloca (n); 31 500000 : } 32 : 33 : void (*func) (int) = do_allocation; 34 : 35 : int 36 1 : main () 37 : { 38 : int i; 39 : 40 : /* This slows down malloc a lot. */ 41 1 : unsetenv ("MALLOC_PERTURB_"); 42 : 43 : /* Repeat a lot of times, to make sure there's no memory leak. */ 44 50001 : for (i = 0; i < 50000; i++) 45 : { 46 : /* Try various values. 47 : n = 0 gave a crash on Alpha with gcc-2.5.8. 48 : Some versions of Mac OS X have a stack size limit of 512 KB. */ 49 50000 : func (34); 50 50000 : func (134); 51 50000 : func (399); 52 50000 : func (510823); 53 50000 : func (129321); 54 50000 : func (0); 55 50000 : func (4070); 56 50000 : func (4095); 57 50000 : func (1); 58 50000 : func (16582); 59 : } 60 : 61 1 : return 0; 62 : }