Closes #29924. Closes #38857. Closes #39665. Closes #39872.
Closes #39553. Closes #41210. Closes #41880. Closes #43483.
--- /dev/null
+// Copyright 2017 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.
+
+struct Foo;
+
+fn main() {
+ || if let Foo::NotEvenReal() = Foo {}; //~ ERROR E0599
+}
--- /dev/null
+// Copyright 2017 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.
+
+// #29924
+
+#![feature(const_fn, associated_consts)]
+
+trait Trait {
+ const N: usize;
+}
+
+impl Trait {
+ //~^ ERROR the trait `Trait` cannot be made into an object [E0038]
+ const fn n() -> usize { Self::N }
+}
+
+fn main() {}
--- /dev/null
+// Copyright 2017 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.
+
+// #39872, #39553
+
+#![feature(conservative_impl_trait)]
+fn will_ice(something: &u32) -> impl Iterator<Item = &u32> {
+ //~^ ERROR the trait bound `(): std::iter::Iterator` is not satisfied [E0277]
+}
+
+fn main() {}
--- /dev/null
+// Copyright 2017 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.
+
+fn main() {
+ let a = std::sys::imp::process::process_common::StdioPipes { ..panic!() };
+ //~^ ERROR failed to resolve. Could not find `imp` in `sys` [E0433]
+ //~^^ ERROR module `sys` is private [E0603]
+}
--- /dev/null
+// Copyright 2017 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.
+
+fn iterate<T, F>(initial: T, f: F) -> Iterate<T, F> {
+ Iterate {
+ state: initial,
+ f: f,
+ }
+}
+
+pub struct Iterate<T, F> {
+ state: T,
+ f: F
+}
+
+impl<T: Clone, F> Iterator for Iterate<T, F> where F: Fn(&T) -> T {
+ type Item = T;
+
+ #[inline]
+ fn next(&mut self) -> Option<Self::Item> {
+ self.state = (self.f)(&self.state);
+ Some(self.state.clone())
+ }
+ #[inline]
+ fn size_hint(&self) -> (usize, Option<usize>) { (std::usize::MAX, None) }
+}
+
+fn main() {
+ let a = iterate(0, |x| x+1);
+ println!("{:?}", a.iter().take(10).collect::<Vec<usize>>());
+ //~^ ERROR no method named `iter` found for type `Iterate<{integer}
+}
--- /dev/null
+// Copyright 2017 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.
+
+// #39665
+
+#![feature(conservative_impl_trait)]
+
+fn batches(n: &u32) -> impl Iterator<Item=&u32> {
+ std::iter::once(n)
+}
+
+fn main() {}
--- /dev/null
+// Copyright 2017 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.
+
+trait VecN {
+ const DIM: usize;
+}
+
+trait Mat {
+ type Row: VecN;
+}
+
+fn m<M: Mat>() {
+ let x = M::Row::DIM;
+}
+
+fn main() {}