1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2004 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2 of the License, or 8 (at your option) any later version. 9 10 This program 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 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 18 02111-1307, USA. */ 19 20 #include <signal.h> 21 #include <stdlib.h> 22 #include <string.h> 23 24 extern void 25 keeper (int sig) 26 { 27 } 28 29 volatile long v1 = 0; 30 volatile long v2 = 0; 31 volatile long v3 = 0; 32 33 extern long 34 bowler (void) 35 { 36 /* Try to read address zero. Do it in a slightly convoluted way so 37 that more than one instruction is used. */ 38 return *(char *) (v1 + v2 + v3); 39 } 40 41 int 42 main () 43 { 44 static volatile int i; 45 46 struct sigaction act; 47 memset (&act, 0, sizeof act); 48 act.sa_handler = keeper; 49 sigaction (SIGSEGV, &act, NULL); 50 51 bowler (); 52 return 0; 53 } 54