Rollup merge of #35920 - GuillaumeGomez:err_codes, r=jonathandturner

Err codes

r? @jonathandturner

Author: Jonathan Turner

src/librustc/diagnostics.rs

@@ -1527,6 +1527,37 @@ fn main() {
 ```
 "##,
 
+E0478: r##"
+A lifetime bound was not satisfied.
+
+Erroneous code example:
+
+```compile_fail,E0478
+// Check that the explicit lifetime bound (`'SnowWhite`, in this example) must
+// outlive all the superbounds from the trait (`'kiss`, in this example).
+
+trait Wedding<'t>: 't { }
+
+struct Prince<'kiss, 'SnowWhite> {
+    child: Box<Wedding<'kiss> + 'SnowWhite>,
+    // error: lifetime bound not satisfied
+}
+```
+
+In this example, the `'SnowWhite` lifetime is supposed to outlive the `'kiss`
+lifetime but the declaration of the `Prince` struct doesn't enforce it. To fix
+this issue, you need to specify it:
+
+```
+trait Wedding<'t>: 't { }
+
+struct Prince<'kiss, 'SnowWhite: 'kiss> { // You say here that 'kiss must live
+                                          // longer than 'SnowWhite.
+    child: Box<Wedding<'kiss> + 'SnowWhite>, // And now it's all good!
+}
+```
+"##,
+
 E0496: r##"
 A lifetime name is shadowing another lifetime name. Erroneous code example:
 
@@ -1715,7 +1746,6 @@ register_diagnostics! {
     E0475, // index of slice outside its lifetime
     E0476, // lifetime of the source pointer does not outlive lifetime bound...
     E0477, // the type `..` does not fulfill the required lifetime...
-    E0478, // lifetime bound not satisfied
     E0479, // the type `..` (provided as the value of a type parameter) is...
     E0480, // lifetime of method receiver does not outlive the method call
     E0481, // lifetime of function argument does not outlive the function call

src/librustc_mir/diagnostics.rs

@@ -18,7 +18,7 @@ for the entire lifetime of a program. Creating a boxed value allocates memory on
 the heap at runtime, and therefore cannot be done at compile time. Erroneous
 code example:
 
-```compile_fail
+```compile_fail,E0010
 #![feature(box_syntax)]
 
 const CON : Box<i32> = box 0;
@@ -30,7 +30,7 @@ Static and const variables can refer to other const variables. But a const
 variable cannot refer to a static variable. For example, `Y` cannot refer to
 `X` here:
 
-```compile_fail
+```compile_fail,E0013
 static X: i32 = 42;
 const Y: i32 = X;
 ```
@@ -66,7 +66,7 @@ E0016: r##"
 Blocks in constants may only contain items (such as constant, function
 definition, etc...) and a tail expression. Erroneous code example:
 
-```compile_fail
+```compile_fail,E0016
 const FOO: i32 = { let x = 0; x }; // 'x' isn't an item!
 ```
 
@@ -81,7 +81,7 @@ E0017: r##"
 References in statics and constants may only refer to immutable values.
 Erroneous code example:
 
-```compile_fail
+```compile_fail,E0017
 static X: i32 = 1;
 const C: i32 = 2;
 
@@ -107,7 +107,7 @@ vary.
 
 For example, if you write:
 
-```compile_fail
+```compile_fail,E0018
 static MY_STATIC: u32 = 42;
 static MY_STATIC_ADDR: usize = &MY_STATIC as *const _ as usize;
 static WHAT: usize = (MY_STATIC_ADDR^17) + MY_STATIC_ADDR;
@@ -152,7 +152,7 @@ impl Test {
 fn main() {
     const FOO: Test = Test::V1;
 
-    const A: i32 = FOO.test(); // You can't call Test::func() here !
+    const A: i32 = FOO.test(); // You can't call Test::func() here!
 }
 ```
 
@@ -214,14 +214,13 @@ static B: &'static u32 = &A; // ok!
 ```
 "##,
 
-
 E0395: r##"
 The value assigned to a constant scalar must be known at compile time,
 which is not the case when comparing raw pointers.
 
 Erroneous code example:
 
-```compile_fail
+```compile_fail,E0395
 static FOO: i32 = 42;
 static BAR: i32 = 42;
 
@@ -250,7 +249,7 @@ The value behind a raw pointer can't be determined at compile-time
 (or even link-time), which means it can't be used in a constant
 expression. Erroneous code example:
 
-```compile_fail
+```compile_fail,E0396
 const REG_ADDR: *const u8 = 0x5f3759df as *const u8;
 
 const VALUE: u8 = unsafe { *REG_ADDR };
@@ -272,7 +271,7 @@ E0492: r##"
 A borrow of a constant containing interior mutability was attempted. Erroneous
 code example:
 
-```compile_fail
+```compile_fail,E0492
 use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT};
 
 const A: AtomicUsize = ATOMIC_USIZE_INIT;
@@ -299,7 +298,7 @@ static B: &'static AtomicUsize = &A; // ok!
 
 You can also have this error while using a cell type:
 
-```compile_fail
+```compile_fail,E0492
 #![feature(const_fn)]
 
 use std::cell::Cell;
@@ -351,7 +350,7 @@ E0493: r##"
 A type with a destructor was assigned to an invalid type of variable. Erroneous
 code example:
 
-```compile_fail
+```compile_fail,E0493
 struct Foo {
     a: u32
 }
@@ -374,7 +373,7 @@ E0494: r##"
 A reference of an interior static was assigned to another const/static.
 Erroneous code example:
 
-```compile_fail
+```compile_fail,E0494
 struct Foo {
     a: u32
 }

src/test/compile-fail/E0478.rs

@@ -0,0 +1,18 @@
+// Copyright 2016 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 Wedding<'t>: 't { }
+
+struct Prince<'kiss, 'SnowWhite> {
+    child: Box<Wedding<'kiss> + 'SnowWhite>, //~ ERROR E0478
+}
+
+fn main() {
+}

src/test/compile-fail/E0492.rs

@@ -0,0 +1,17 @@
+// Copyright 2016 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.
+
+use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT};
+
+const A: AtomicUsize = ATOMIC_USIZE_INIT;
+static B: &'static AtomicUsize = &A; //~ ERROR E0492
+
+fn main() {
+}

src/test/compile-fail/E0493.rs

@@ -0,0 +1,22 @@
+// Copyright 2016 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 {
+    a: u32
+}
+
+impl Drop for Foo {
+    fn drop(&mut self) {}
+}
+
+const F : Foo = Foo { a : 0 }; //~ ERROR E0493
+
+fn main() {
+}

src/test/compile-fail/E0494.rs

@@ -0,0 +1,19 @@
+// Copyright 2016 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 {
+    a: u32
+}
+
+static S : Foo = Foo { a : 0 };
+static A : &'static u32 = &S.a; //~ ERROR E0494
+
+fn main() {
+}

src/test/compile-fail/E0496.rs

@@ -0,0 +1,21 @@
+// Copyright 2016 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<'a> {
+    a: &'a i32,
+}
+
+impl<'a> Foo<'a> {
+    fn f<'a>(x: &'a i32) { //~ ERROR E0496
+    }
+}
+
+fn main() {
+}

src/test/compile-fail/E0499.rs

@@ -0,0 +1,15 @@
+// Copyright 2016 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 mut i = 0;
+    let mut x = &mut i;
+    let mut a = &mut i; //~ ERROR E0499
+}

src/test/compile-fail/E0501.rs

@@ -0,0 +1,25 @@
+// Copyright 2016 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 inside_closure(x: &mut i32) {
+}
+
+fn outside_closure(x: &mut i32) {
+}
+
+fn foo(a: &mut i32) {
+    let bar = || {
+        inside_closure(a)
+    };
+    outside_closure(a); //~ ERROR E0501
+}
+
+fn main() {
+}