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Co-authored-by: Travis Cross <[email protected]>

Author: folkertdev

compiler/rustc_feature/src/unstable.rs

@@ -546,7 +546,8 @@ declare_features! (
     /// Allows using `#[link(kind = "link-arg", name = "...")]`
     /// to pass custom arguments to the linker.
     (unstable, link_arg_attribute, "1.76.0", Some(99427)),
-    (unstable, loop_match, "CURRENT_RUSTC_VERSION", Some(138777)),
+    /// Allows fused `loop`/`match` for direct intraprocedural jumps.
+    (incomplete, loop_match, "CURRENT_RUSTC_VERSION", Some(138777)),
     /// Give access to additional metadata about declarative macro meta-variables.
     (unstable, macro_metavar_expr, "1.61.0", Some(83527)),
     /// Provides a way to concatenate identifiers using metavariable expressions.

compiler/rustc_mir_build/messages.ftl

@@ -215,14 +215,15 @@ mir_build_literal_in_range_out_of_bounds =
     .label = this value does not fit into the type `{$ty}` whose range is `{$min}..={$max}`
 
 mir_build_loop_match_bad_rhs =
-    this expression must be a single `match` wrapped in a labelled block
+    this expression must be a single `match` wrapped in a labeled block
 
 mir_build_loop_match_bad_statements =
     statements are not allowed in this position within a `loop_match`
 
 mir_build_loop_match_invalid_match =
     invalid match on `loop_match` state
     .note = only matches on local variables are valid
+
 mir_build_loop_match_invalid_update =
     invalid update of the `loop_match` state
     .label = the assignment must update this variable

compiler/rustc_mir_build/src/builder/expr/into.rs

@@ -248,7 +248,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
                     None
                 })
             }
-            ExprKind::LoopMatch { state, region_scope, ref arms, .. } => {
+            ExprKind::LoopMatch { state, region_scope, ref arms } => {
                 // FIXME add diagram
 
                 let dropless_arena = rustc_arena::DroplessArena::default();

compiler/rustc_passes/messages.ftl

@@ -103,7 +103,6 @@ passes_const_continue_attr =
     `#[const_continue]` should be applied to a break expression
     .label = not a break expression
 
-
 passes_const_stable_not_stable =
     attribute `#[rustc_const_stable]` can only be applied to functions that are declared `#[stable]`
     .label = attribute specified here