1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2009-2023 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 <pthread.h> 19 #include <unistd.h> 20 #include <stdlib.h> 21 #include <stdio.h> 22 #include <string.h> 23 #include <assert.h> 24 25 static const char *image; 26 static char *argv1 = "go away"; 27 28 static void * 29 thread_execler (void *arg) 30 { 31 /* Exec ourselves again. */ 32 if (execl (image, image, argv1, NULL) == -1) /* break-here */ 33 { 34 perror ("execl"); 35 abort (); 36 } 37 38 return NULL; 39 } 40 41 int 42 main (int argc, char **argv) 43 { 44 pthread_t thread; 45 int i; 46 47 image = argv[0]; 48 49 /* Pass "inf" as argument to keep re-execing ad infinitum, which can 50 be useful for manual testing. Passing any other argument exits 51 immediately (and that's what the execl above does by 52 default). */ 53 if (argc == 2 && strcmp (argv[1], "inf") == 0) 54 argv1 = argv[1]; 55 else if (argc > 1) 56 exit (0); 57 58 i = pthread_create (&thread, NULL, thread_execler, NULL); 59 assert (i == 0); 60 pthread_join (thread, NULL); 61 62 return 0; 63 } 64