1 files changed, 42 insertions, 0 deletions
diff --git a/elf/tst-unwind-ctor-lib.c b/elf/tst-unwind-ctor-lib.c
new file mode 100644
index 0000000000..ebcc2e7840
--- /dev/null
+++ b/elf/tst-unwind-ctor-lib.c
@@ -0,0 +1,42 @@
+/* Unit test for _Unwind_Backtrace in a shared object constructor.
+   Copyright (C) 2018 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 <unwind.h>
+#include <unistd.h>
+
+static _Unwind_Reason_Code
+callback (struct _Unwind_Context *ctx, void *arg)
+{
+  return _URC_NO_REASON;
+}
+
+static void
+__attribute__ ((constructor))
+do_unwind (void)
+{
+  /* Arrange for this test to be killed if _Unwind_Backtrace runs into an
+     endless loop.  We cannot use the test driver since the test needs to
+     run in a constructor.  */
+  alarm (20);
+  _Unwind_Backtrace (callback, 0);
+}
+
+void
+dummy (void)
+{
+}