Move compile-fail/unsized-locals under ui as per #44844.

src/test/ui/unsized-locals/by-value-trait-object-safety.rs

@@ -0,0 +1,30 @@
+// Copyright 2018 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.
+
+#![feature(unsized_locals)]
+
+pub trait Foo {
+    fn foo(self) -> String where Self: Sized;
+}
+
+struct A;
+
+impl Foo for A {
+    fn foo(self) -> String {
+        format!("hello")
+    }
+}
+
+
+fn main() {
+    let x = *(Box::new(A) as Box<dyn Foo>);
+    x.foo();
+    //~^ERROR the `foo` method cannot be invoked on a trait object
+}

src/test/ui/unsized-locals/by-value-trait-object-safety.stderr

@@ -0,0 +1,8 @@
+error: the `foo` method cannot be invoked on a trait object
+  --> $DIR/by-value-trait-object-safety.rs:28:7
+   |
+LL |     x.foo();
+   |       ^^^
+
+error: aborting due to previous error
+

src/test/ui/unsized-locals/unsized-exprs.rs

@@ -0,0 +1,36 @@
+// Copyright 2018 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.
+
+#![feature(unsized_tuple_coercion, unsized_locals)]
+
+struct A<X: ?Sized>(X);
+
+fn udrop<T: ?Sized>(_x: T) {}
+fn foo() -> Box<[u8]> {
+    Box::new(*b"foo")
+}
+fn tfoo() -> Box<(i32, [u8])> {
+    Box::new((42, *b"foo"))
+}
+fn afoo() -> Box<A<[u8]>> {
+    Box::new(A(*b"foo"))
+}
+
+impl std::ops::Add<i32> for A<[u8]> {
+    type Output = ();
+    fn add(self, _rhs: i32) -> Self::Output {}
+}
+
+fn main() {
+    udrop::<(i32, [u8])>((42, *foo()));
+    //~^ERROR E0277
+    udrop::<A<[u8]>>(A { 0: *foo() });
+    //~^ERROR E0277
+}

src/test/ui/unsized-locals/unsized-exprs.stderr

@@ -0,0 +1,25 @@
+error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
+  --> $DIR/unsized-exprs.rs:32:26
+   |
+LL |     udrop::<(i32, [u8])>((42, *foo()));
+   |                          ^^^^^^^^^^^^ doesn't have a size known at compile-time
+   |
+   = help: within `({integer}, [u8])`, the trait `std::marker::Sized` is not implemented for `[u8]`
+   = note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
+   = note: required because it appears within the type `({integer}, [u8])`
+   = note: tuples must have a statically known size to be initialized
+
+error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
+  --> $DIR/unsized-exprs.rs:34:22
+   |
+LL |     udrop::<A<[u8]>>(A { 0: *foo() });
+   |                      ^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
+   |
+   = help: within `A<[u8]>`, the trait `std::marker::Sized` is not implemented for `[u8]`
+   = note: to learn more, visit <https://doc.rust-lang.org/book/second-edition/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
+   = note: required because it appears within the type `A<[u8]>`
+   = note: structs must have a statically known size to be initialized
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0277`.

src/test/ui/unsized-locals/unsized-exprs2.nll.stderr

@@ -0,0 +1,19 @@
+error[E0508]: cannot move out of type `[u8]`, a non-copy slice
+  --> $DIR/unsized-exprs2.rs:32:19
+   |
+LL |     udrop::<[u8]>(foo()[..]);
+   |                   ^^^^^^^^^ cannot move out of here
+
+error[E0507]: cannot move out of data in a `&` reference
+  --> $DIR/unsized-exprs2.rs:32:19
+   |
+LL |     udrop::<[u8]>(foo()[..]);
+   |                   ^^^^^^^^^
+   |                   |
+   |                   cannot move out of data in a `&` reference
+   |                   cannot move
+
+error: aborting due to 2 previous errors
+
+Some errors occurred: E0507, E0508.
+For more information about an error, try `rustc --explain E0507`.

src/test/ui/unsized-locals/unsized-exprs2.rs

@@ -0,0 +1,36 @@
+// Copyright 2018 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.
+
+#![feature(unsized_tuple_coercion, unsized_locals)]
+
+struct A<X: ?Sized>(X);
+
+fn udrop<T: ?Sized>(_x: T) {}
+fn foo() -> Box<[u8]> {
+    Box::new(*b"foo")
+}
+fn tfoo() -> Box<(i32, [u8])> {
+    Box::new((42, *b"foo"))
+}
+fn afoo() -> Box<A<[u8]>> {
+    Box::new(A(*b"foo"))
+}
+
+impl std::ops::Add<i32> for A<[u8]> {
+    type Output = ();
+    fn add(self, _rhs: i32) -> Self::Output {}
+}
+
+fn main() {
+    udrop::<[u8]>(foo()[..]);
+    //~^ERROR cannot move out of indexed content
+    // FIXME: should be error
+    udrop::<A<[u8]>>(A(*foo()));
+}

src/test/ui/unsized-locals/unsized-exprs2.stderr

@@ -0,0 +1,9 @@
+error[E0507]: cannot move out of indexed content
+  --> $DIR/unsized-exprs2.rs:32:19
+   |
+LL |     udrop::<[u8]>(foo()[..]);
+   |                   ^^^^^^^^^ cannot move out of indexed content
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0507`.