Test for deadlock situation when running destructors for DSOs.

2 files changed, 107 insertions, 0 deletions

diff --git a/nptl/tst-fini1.c b/nptl/tst-fini1.c
new file mode 100644
index 0000000000..bec4be1d30
--- /dev/null
+++ b/nptl/tst-fini1.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <unistd.h>
+
+extern void m (void);
+
+int
+main (void)
+{
+  alarm (5);
+
+  m ();
+
+  /* The destructor is supposed to run now.  Make sure that if it is
+     not we will notice it by using 42 as the exit code.  In case the
+     destructor is run it will terminate with status zero.  */
+  return 42;
+}
diff --git a/nptl/tst-fini1mod.c b/nptl/tst-fini1mod.c
new file mode 100644
index 0000000000..492d9ffb89
--- /dev/null
+++ b/nptl/tst-fini1mod.c
@@ -0,0 +1,72 @@
+/* Copyright (C) 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+
+static void *
+tf (void *arg)
+{
+  int fds[2];
+  if (pipe (fds) != 0)
+    {
+      puts ("pipe failed");
+      exit (1);
+    }
+
+  char buf[10];
+  read (fds[0], buf, sizeof (buf));
+
+  puts ("read returned");
+  exit (1);
+}
+
+static pthread_t th;
+
+static void
+__attribute ((destructor))
+dest (void)
+{
+  if (pthread_cancel (th) != 0)
+    {
+      puts ("cancel failed");
+      _exit (1);
+    }
+  void *r;
+  if (pthread_join (th, &r) != 0)
+    {
+      puts ("join failed");
+      _exit (1);
+    }
+  /* Exit successfully.  */
+  _exit (0);
+}
+
+void
+m (void)
+{
+  if (pthread_create (&th, NULL, tf, NULL) != 0)
+    {
+      puts ("create failed");
+      _exit (1);
+    }
+}