1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2008-2017 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 3 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, see <http://www.gnu.org/licenses/>. */ 17 18 #include <setjmp.h> 19 20 jmp_buf env; 21 22 volatile int longjmps = 0; 23 volatile int resumes = 0; 24 25 int 26 call_longjmp (jmp_buf *buf) 27 { 28 longjmps++; 29 longjmp (*buf, 1); 30 } 31 32 void 33 hidden_longjmp (void) 34 { 35 if (setjmp (env) == 0) 36 { 37 call_longjmp (&env); 38 } 39 else 40 resumes++; 41 } 42 43 int 44 main () 45 { 46 volatile int i = 0; 47 48 /* Pattern 1 - simple longjmp. */ 49 if (setjmp (env) == 0) /* patt1 */ 50 { 51 longjmps++; 52 longjmp (env, 1); 53 } 54 else 55 { 56 resumes++; 57 } 58 59 i = 1; /* miss_step_1 */ 60 61 62 /* Pattern 2 - longjmp from an inner function. */ 63 if (setjmp (env) == 0) /* patt2 */ 64 { 65 call_longjmp (&env); 66 } 67 else 68 { 69 resumes++; 70 } 71 72 i = 2; /* miss_step_2 */ 73 74 /* Pattern 3 - setjmp/longjmp inside stepped-over function. */ 75 hidden_longjmp (); /* patt3 */ 76 77 i = 77; /* longjmp caught */ 78 79 i = 3; /* patt_end3. */ 80 81 return 0; 82 } 83