diff --git a/src/expr.rs b/src/expr.rs
index 6b7e07b..8fc532c 100644
--- a/src/expr.rs
+++ b/src/expr.rs
@@ -1614,6 +1614,8 @@
         |
         cond_reduce!(allow_block, syn!(ExprBlock)) => { Expr::Block }
         |
+        call!(unstable_labeled_block) => { Expr::Verbatim }
+        |
         // NOTE: This is the prefix-form of range
         call!(expr_range, allow_struct)
         |
@@ -1655,6 +1657,8 @@
             syn!(ExprUnsafe) => { Expr::Unsafe }
             |
             syn!(ExprBlock) => { Expr::Block }
+            |
+            call!(unstable_labeled_block) => { Expr::Verbatim }
         ) >>
         // If the next token is a `.` or a `?` it is special-cased to parse
         // as an expression instead of a blockexpression.
@@ -2451,6 +2455,21 @@
     }
 
     #[cfg(feature = "full")]
+    named!(unstable_labeled_block -> ExprVerbatim, do_parse!(
+        begin: call!(verbatim::grab_cursor) >>
+        many0!(Attribute::parse_outer) >>
+        option!(syn!(Label)) >>
+        braces!(tuple!(
+            many0!(Attribute::parse_inner),
+            call!(Block::parse_within),
+        )) >>
+        end: call!(verbatim::grab_cursor) >>
+        (ExprVerbatim {
+            tts: verbatim::token_range(begin..end),
+        })
+    ));
+
+    #[cfg(feature = "full")]
     named!(expr_range(allow_struct: bool) -> Expr, do_parse!(
         limits: syn!(RangeLimits) >>
         hi: opt_ambiguous_expr!(allow_struct) >>
diff --git a/tests/common/mod.rs b/tests/common/mod.rs
index ef29feb..b9bd283 100644
--- a/tests/common/mod.rs
+++ b/tests/common/mod.rs
@@ -78,10 +78,6 @@
         // https://github.com/dtolnay/syn/issues/390
         "tests/rust/src/test/run-pass-fulldeps/proc-macro/macros-in-extern.rs" |
         "tests/rust/src/test/run-pass/macros-in-extern.rs" |
-        // TODO feature(label_break_value)
-        //
-        // https://github.com/dtolnay/syn/issues/455
-        "tests/rust/src/test/run-pass/label_break_value.rs" |
         // Deprecated placement syntax
         "tests/rust/src/test/run-pass/new-box-syntax.rs" |
         "tests/rust/src/test/ui/obsolete-in-place/bad.rs" |