1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2015-2023 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 Test that GDB doesn't lose an event for a thread it didn't know 19 about, until an event is reported for it. */ 20 21 #define _GNU_SOURCE 22 #include <sched.h> 23 #include <assert.h> 24 #include <stdlib.h> 25 #include <sys/types.h> 26 #include <sys/wait.h> 27 #include <unistd.h> 28 #include <pthread.h> 29 30 #define STACK_SIZE 0x1000 31 32 int clone_pid; 33 34 static int 35 clone_fn (void *unused) 36 { 37 return 0; 38 } 39 40 void * 41 thread_fn (void *arg) 42 { 43 unsigned char *stack; 44 int res; 45 46 stack = malloc (STACK_SIZE); 47 assert (stack != NULL); 48 49 #ifdef __ia64__ 50 clone_pid = __clone2 (clone_fn, stack, STACK_SIZE, CLONE_VM, NULL); 51 #else 52 clone_pid = clone (clone_fn, stack + STACK_SIZE, CLONE_VM, NULL); 53 #endif 54 55 assert (clone_pid > 0); 56 57 /* Wait for child. */ 58 res = waitpid (clone_pid, NULL, __WCLONE); 59 assert (res != -1); 60 61 return NULL; 62 } 63 64 int 65 main (int argc, char **argv) 66 { 67 pthread_t child; 68 69 alarm (300); 70 71 pthread_create (&child, NULL, thread_fn, NULL); 72 pthread_join (child, NULL); 73 74 return 0; 75 } 76