test unwinding past topmost frame of a stack

Author: RalfJung

tests/compile-fail/concurrency/unwind_top_of_stack.rs

@@ -0,0 +1,24 @@
+// ignore-windows: Concurrency on Windows is not supported yet.
+// error-pattern: unwinding past the topmost frame of the stack
+
+//! Unwinding past the top frame of a stack is Undefined Behavior.
+
+#![feature(rustc_private)]
+
+extern crate libc;
+
+use std::{mem, ptr};
+
+extern "C" fn thread_start(_null: *mut libc::c_void) -> *mut libc::c_void {
+    panic!()
+}
+
+fn main() {
+    unsafe {
+        let mut native: libc::pthread_t = mem::zeroed();
+        let attr: libc::pthread_attr_t = mem::zeroed();
+        // assert_eq!(libc::pthread_attr_init(&mut attr), 0); FIXME: this function is not yet implemented.
+        assert_eq!(libc::pthread_create(&mut native, &attr, thread_start, ptr::null_mut()), 0);
+        assert_eq!(libc::pthread_join(native, ptr::null_mut()), 0);
+    }
+}