1 files changed, 15 insertions, 0 deletions
diff --git a/src/test/ui/threads-sendsync/spawning-with-debug.rs b/src/test/ui/threads-sendsync/spawning-with-debug.rs
new file mode 100644
index 00000000000..388d62aa710
--- /dev/null
+++ b/src/test/ui/threads-sendsync/spawning-with-debug.rs
@@ -0,0 +1,15 @@
+// run-pass
+#![allow(unused_must_use)]
+#![allow(unused_mut)]
+// ignore-windows
+// exec-env:RUSTC_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|| ());
+}