1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/run-pass/threads-sendsync/spawning-with-debug.rs b/src/test/run-pass/threads-sendsync/spawning-with-debug.rs
new file mode 100644
index 00000000000..38fc9dec829
--- /dev/null
+++ b/src/test/run-pass/threads-sendsync/spawning-with-debug.rs
@@ -0,0 +1,25 @@
+// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// run-pass
+#![allow(unused_must_use)]
+#![allow(unused_mut)]
+// ignore-windows
+// exec-env:RUST_LOG=debug
+// ignore-emscripten no threads support
+
+// regression test for issue #10405, make sure we don't call println! too soon.
+
+use std::thread::Builder;
+
+pub fn main() {
+    let mut t = Builder::new();
+    t.spawn(move|| ());
+}