37bc665e4e
GCC5 defaults to the GNU11 standard for C and warns by default for implicit function declarations and implicit return types. https://gcc.gnu.org/gcc-5/porting_to.html Fixing these issues in the testsuite turns 9 untested and 17 unsupported testcases into 417 new passes when compiling with GCC5. gdb/testsuite/ChangeLog: * gdb.arch/i386-bp_permanent.c (standard): New declaration. * gdb.base/disp-step-fork.c: Include unistd.h. * gdb.base/siginfo-obj.c: Include stdio.h. * gdb.base/siginfo-thread.c: Likewise. * gdb.mi/non-stop.c: Include unistd.h. * gdb.mi/nsthrexec.c: Include stdio.h. * gdb.mi/pthreads.c: Include unistd.h. * gdb.modula2/unbounded1.c (main): Declare returns int. * gdb.reverse/consecutive-reverse.c: Likewise. * gdb.threads/create-fail.c: Include unistd.h. * gdb.threads/killed.c: Likewise. * gdb.threads/linux-dp.c: Likewise. * gdb.threads/non-ldr-exc-1.c: Include stdio.h and string.h. * gdb.threads/non-ldr-exc-2.c: Likewise. * gdb.threads/non-ldr-exc-3.c: Likewise. * gdb.threads/non-ldr-exc-4.c: Likewise. * gdb.threads/pthreads.c: Include unistd.h. (main): Declare returns int. * gdb.threads/tls-main.c (foo): New declaration. * gdb.threads/watchpoint-fork-mt.c: Define _GNU_SOURCE.
120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2012-2015 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#define _GNU_SOURCE
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sched.h>
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#include <errno.h>
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#include <string.h>
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#include <assert.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <assert.h>
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#include <unistd.h>
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/* Count the number of tasks/threads in the PID thread group. */
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static int
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count_tasks (pid_t pid)
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{
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char path[100];
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int count;
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DIR *d;
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snprintf (path, sizeof (path), "/proc/%d/task/", (int) pid);
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d = opendir (path);
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if (d == NULL)
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return -1;
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for (count = 0; readdir (d) != NULL; count++)
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;
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closedir (d);
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/* Account for '.' and '..'. */
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assert (count > 2);
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return count - 2;
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}
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pthread_attr_t attr[CPU_SETSIZE];
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pthread_t thr[CPU_SETSIZE];
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static void *
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mythread (void *_arg)
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{
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return NULL;
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}
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int
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main ()
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{
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int i;
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for (i = 0; i < CPU_SETSIZE; i++)
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{
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cpu_set_t set;
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int ret;
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pthread_attr_init (&attr[i]);
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CPU_ZERO_S (sizeof (set), &set);
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CPU_SET_S (i, sizeof (set), &set);
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ret = pthread_attr_setaffinity_np (&attr[i], sizeof (set), &set);
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if (ret != 0)
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{
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fprintf (stderr, "set_affinity: %d: %s\n", ret, strerror (ret));
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exit (3);
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}
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ret = pthread_create (&thr[i], &attr[i], mythread, NULL);
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/* Should fail with EINVAL at some point. */
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if (ret != 0)
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{
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unsigned long t;
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fprintf (stderr, "pthread_create: %d: %s\n", ret, strerror (ret));
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/* Wait for all threads to exit. pthread_create spawns a
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clone thread even in the failing case, as it can only try
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to set the affinity after creating the thread. That new
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thread is immediately canceled (because setting the
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affinity fails), by killing it with a SIGCANCEL signal,
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which may end up in pthread_cancel/unwind paths, which
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may trigger a libgcc_s.so load, making the thread hit the
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solib-event breakpoint. Now, if we would let the program
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exit without waiting, sometimes it would happen that the
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inferior exits just while we're handling the solib-event,
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resulting in errors being thrown due to failing ptrace
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call fails (with ESCHR), breaking the test. */
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t = 16;
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while (count_tasks (getpid ()) > 1)
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{
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usleep (t);
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if (t < 256)
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t *= 2;
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}
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/* Normal exit, because this is what we are expecting. */
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exit (0);
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}
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}
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/* Should not normally be reached. */
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exit (1);
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}
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