1 files changed, 81 insertions, 0 deletions
diff --git a/REORG.TODO/nptl/tst-once5.cc b/REORG.TODO/nptl/tst-once5.cc
new file mode 100644
index 0000000000..47d9436596
--- /dev/null
+++ b/REORG.TODO/nptl/tst-once5.cc
@@ -0,0 +1,81 @@
+/* Copyright (C) 2015-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <string.h>
+
+
+static pthread_once_t once = PTHREAD_ONCE_INIT;
+
+// Exception type thrown from the pthread_once init routine.
+struct OnceException { };
+
+// Test iteration counter.
+static int niter;
+
+static void
+init_routine (void)
+{
+  if (niter < 2)
+    throw OnceException ();
+}
+
+// Verify that an exception thrown from the pthread_once init routine
+// is propagated to the pthread_once caller and that the function can
+// be subsequently invoked to attempt the initialization again.
+static int
+do_test (void)
+{
+  int result = 1;
+
+  // Repeat three times, having the init routine throw the first two
+  // times and succeed on the final attempt.
+  for (niter = 0; niter != 3; ++niter) {
+
+    try {
+      int rc = pthread_once (&once, init_routine);
+      if (rc)
+        fprintf (stderr, "pthread_once failed: %i (%s)\n",
+                 rc, strerror (rc));
+
+      if (niter < 2)
+        fputs ("pthread_once unexpectedly returned without"
+               " throwing an exception", stderr);
+    }
+    catch (OnceException) {
+      if (1 < niter)
+        fputs ("pthread_once unexpectedly threw", stderr);
+      result = 0;
+    }
+    catch (...) {
+      fputs ("pthread_once threw an unknown exception", stderr);
+    }
+
+    // Abort the test on the first failure.
+    if (result)
+      break;
+  }
+
+  return result;
+}
+
+// The test currently hangs and is XFAILed.  Reduce the timeout.
+#define TIMEOUT 1
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"