i += 1;
};
```
+"##,
+
+E0695: r##"
+A `break` statement without a label appeared inside a labeled block.
+
+Example of erroneous code:
+
+```compile_fail,E0695
+# #![feature(label_break_value)]
+loop {
+ 'a: {
+ break;
+ }
+}
+```
+
+Make sure to always label the `break`:
+
+```
+'l: loop {
+ 'a: {
+ break 'l;
+ }
+}
+```
+
+Or if you want to `break` the labeled block:
+
+```
+# #![feature(label_break_value)]
+loop {
+ 'a: {
+ break 'a;
+ }
+ break;
+}
+```
"##
}
}
if self.cx == LabeledBlock {
+ if label.label.is_none() {
+ struct_span_err!(self.sess, e.span, E0695,
+ "unlabeled `break` inside of a labeled block")
+ .span_label(e.span,
+ "`break` statements that would diverge to or through \
+ a labeled block need to bear a label")
+ .emit();
+ }
return;
}
--- /dev/null
+// 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.
+
+// Simple unlabeled break should yield in an error
+fn unlabeled_break_simple() {
+ 'b: {
+ break; //~ ERROR unlabeled `break` inside of a labeled block
+ }
+}
+
+// Unlabeled break that would cross a labeled block should yield in an error
+fn unlabeled_break_crossing() {
+ loop {
+ 'b: {
+ break; //~ ERROR unlabeled `break` inside of a labeled block
+ }
+ }
+}
+
+pub fn main() {}
--- /dev/null
+error[E0695]: unlabeled `break` inside of a labeled block
+ --> $DIR/label_break_value_unlabeled_break.rs:14:9
+ |
+LL | break; //~ ERROR unlabeled `break` inside of a labeled block
+ | ^^^^^ `break` statements that would diverge to or through a labeled block need to bear a label
+
+error[E0695]: unlabeled `break` inside of a labeled block
+ --> $DIR/label_break_value_unlabeled_break.rs:22:13
+ |
+LL | break; //~ ERROR unlabeled `break` inside of a labeled block
+ | ^^^^^ `break` statements that would diverge to or through a labeled block need to bear a label
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0695`.