Auto merge of #22574 - huonw:remove-lame-statics, r=alexcirchton

Add a basic test that checks that the types catch the most glaring
errors that could occur.

cc #22444

src/test/compile-fail/send-is-not-static-std-sync-2.rs

@@ -0,0 +1,46 @@
+// Copyright 2015 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.
+
+// basic tests to see that certain "obvious" errors are caught by
+// these types no longer requiring `'static` (RFC 458)
+
+#![allow(dead_code)]
+
+use std::sync::{Mutex, RwLock, mpsc};
+
+fn mutex() {
+    let lock = {
+        let x = 1;
+        Mutex::new(&x) //~ ERROR does not live long enough
+    };
+
+    let _dangling = *lock.lock().unwrap();
+}
+
+fn rwlock() {
+    let lock = {
+        let x = 1;
+        RwLock::new(&x) //~ ERROR does not live long enough
+    };
+    let _dangling = *lock.read().unwrap();
+}
+
+fn channel() {
+    let (_tx, rx) = {
+        let x = 1;
+        let (tx, rx) = mpsc::channel();
+        let _ = tx.send(&x); //~ ERROR does not live long enough
+        (tx, rx)
+    };
+
+    let _dangling = rx.recv();
+}
+
+fn main() {}

src/test/compile-fail/send-is-not-static-std-sync.rs

@@ -0,0 +1,56 @@
+// Copyright 2015 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.
+
+// basic tests to see that certain "obvious" errors are caught by
+// these types no longer requiring `'static` (RFC 458)
+
+#![allow(dead_code)]
+
+use std::sync::{Mutex, RwLock, mpsc};
+
+fn mutex() {
+    let x = 1;
+    let y = Box::new(1);
+    let lock = Mutex::new(&x);
+    *lock.lock().unwrap() = &*y;
+    drop(y); //~ ERROR cannot move out
+    {
+        let z = 2;
+        *lock.lock().unwrap() = &z; //~ ERROR does not live long enough
+    }
+}
+
+fn rwlock() {
+    let x = 1;
+    let y = Box::new(1);
+    let lock = RwLock::new(&x);
+    *lock.write().unwrap() = &*y;
+    drop(y); //~ ERROR cannot move out
+    {
+        let z = 2;
+        *lock.write().unwrap() = &z; //~ ERROR does not live long enough
+    }
+}
+
+fn channel() {
+    let x = 1;
+    let y = Box::new(1);
+    let (tx, rx) = mpsc::channel();
+
+    tx.send(&x).unwrap();
+    tx.send(&*y);
+    drop(y); //~ ERROR cannot move out
+    {
+        let z = 2;
+        tx.send(&z).unwrap(); //~ ERROR does not live long enough
+    }
+}
+
+fn main() {}