1 /* Test of safe automatic memory allocation. 2 Copyright (C) 2005, 2007, 2009-2021 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 /* 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 do_allocation (int n) /* */ 27 { 28 void *volatile ptr = malloca (n); 29 freea (ptr); 30 safe_alloca (n); 31 } 32 33 void (*func) (int) = do_allocation; 34 35 int 36 main () /* */ 37 { 38 int i; 39 40 /* This slows down malloc a lot. */ 41 unsetenv ("MALLOC_PERTURB_"); 42 43 /* Repeat a lot of times, to make sure there's no memory leak. */ 44 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 func (34); 50 func (134); 51 func (399); 52 func (510823); 53 func (129321); 54 func (0); 55 func (4070); 56 func (4095); 57 func (1); 58 func (16582); 59 } 60 61 return 0; 62 }