Move compile-fail tests with NOTE/HELP annotations to UI

1 files changed, 62 insertions, 0 deletions

diff --git a/src/test/ui/loops-reject-duplicate-labels.rs b/src/test/ui/loops-reject-duplicate-labels.rs
new file mode 100644
index 00000000000..31f89493896
--- /dev/null
+++ b/src/test/ui/loops-reject-duplicate-labels.rs
@@ -0,0 +1,62 @@
+// 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.
+
+#![feature(rustc_attrs)]
+
+// ignore-tidy-linelength
+
+// Issue #21633: reject duplicate loop labels in function bodies.
+// This is testing the exact cases that are in the issue description.
+
+fn foo() {
+    'fl: for _ in 0..10 { break; } //~ NOTE first declared here
+    'fl: loop { break; }           //~ WARN label name `'fl` shadows a label name that is already in scope
+                                   //~^ NOTE lifetime 'fl already in scope
+
+    'lf: loop { break; }           //~ NOTE first declared here
+    'lf: for _ in 0..10 { break; } //~ WARN label name `'lf` shadows a label name that is already in scope
+                                   //~^ NOTE lifetime 'lf already in scope
+    'wl: while 2 > 1 { break; }    //~ NOTE first declared here
+    'wl: loop { break; }           //~ WARN label name `'wl` shadows a label name that is already in scope
+                                   //~^ NOTE lifetime 'wl already in scope
+    'lw: loop { break; }           //~ NOTE first declared here
+    'lw: while 2 > 1 { break; }    //~ WARN label name `'lw` shadows a label name that is already in scope
+                                   //~^ NOTE lifetime 'lw already in scope
+    'fw: for _ in 0..10 { break; } //~ NOTE first declared here
+    'fw: while 2 > 1 { break; }    //~ WARN label name `'fw` shadows a label name that is already in scope
+                                   //~^ NOTE lifetime 'fw already in scope
+    'wf: while 2 > 1 { break; }    //~ NOTE first declared here
+    'wf: for _ in 0..10 { break; } //~ WARN label name `'wf` shadows a label name that is already in scope
+                                   //~^ NOTE lifetime 'wf already in scope
+    'tl: while let Some(_) = None::<i32> { break; } //~ NOTE first declared here
+    'tl: loop { break; }           //~ WARN label name `'tl` shadows a label name that is already in scope
+                                   //~^ NOTE lifetime 'tl already in scope
+    'lt: loop { break; }           //~ NOTE first declared here
+    'lt: while let Some(_) = None::<i32> { break; }
+                                   //~^ WARN label name `'lt` shadows a label name that is already in scope
+                                   //~| NOTE lifetime 'lt already in scope
+}
+
+// Note however that it is okay for the same label to be reused in
+// different methods of one impl, as illustrated here.
+
+struct S;
+impl S {
+    fn m1(&self) { 'okay: loop { break 'okay; } }
+    fn m2(&self) { 'okay: loop { break 'okay; } }
+}
+
+#[rustc_error]
+pub fn main() { //~ ERROR compilation successful
+    let s = S;
+    s.m1();
+    s.m2();
+    foo();
+}