[BZ #4938]

2007-08-21  Ulrich Drepper  <drepper@redhat.com>
	[BZ #4938]
	* allocatestack.c (__reclaim_stacks): Clear the TSD in the
	reclaimed stack if necessary.
	* Makefile (tests): Add tst-tsd6.
	* tst-tsd6.c: New file.

1 files changed, 89 insertions, 0 deletions

diff --git a/nptl/tst-tsd6.c b/nptl/tst-tsd6.c
new file mode 100644
index 0000000000..debb1dd367
--- /dev/null
+++ b/nptl/tst-tsd6.c
@@ -0,0 +1,89 @@
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/wait.h>
+
+#define NKEYS 100
+static pthread_key_t keys[NKEYS];
+static pthread_barrier_t b;
+
+
+static void *
+tf (void *arg)
+{
+  void *res = NULL;
+  for (int i = 0; i < NKEYS; ++i)
+    {
+      void *p = pthread_getspecific (keys[i]);
+      pthread_setspecific (keys[i], (void *) 7);
+      if (p != NULL)
+	res = p;
+    }
+  if (arg != NULL)
+    {
+      pthread_barrier_wait (arg);
+      pthread_barrier_wait (arg);
+    }
+  return res;
+}
+
+
+static int
+do_test (void)
+{
+  pthread_barrier_init (&b, NULL, 2);
+
+  for (int i = 0; i < NKEYS; ++i)
+    if (pthread_key_create (&keys[i], NULL) != 0)
+      {
+	puts ("cannot create keys");
+	return 1;
+      }
+
+  pthread_t th;
+  if (pthread_create (&th, NULL, tf, &b) != 0)
+    {
+      puts ("cannot create thread in parent");
+      return 1;
+    }
+
+  pthread_barrier_wait (&b);
+
+  pid_t pid = fork ();
+  if (pid == 0)
+    {
+      if (pthread_create (&th, NULL, tf, NULL) != 0)
+	{
+	  puts ("cannot create thread in child");
+	  exit (1);
+	}
+
+      void *res;
+      pthread_join (th, &res);
+
+      exit (res != NULL);
+    }
+  else if (pid == -1)
+    {
+      puts ("cannot create child process");
+      return 1;
+    }
+
+  int s;
+  if (TEMP_FAILURE_RETRY (waitpid (pid, &s, 0)) != pid)
+    {
+      puts ("failing to wait for child process");
+      return 1;
+    }
+
+  pthread_barrier_wait (&b);
+  pthread_join (th, NULL);
+
+  return !WIFEXITED (s) ? 2 : WEXITSTATUS (s);
+}
+
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"