diff options
Diffstat (limited to 'compiler/rustc_ast_passes/src/feature_gate.rs')
| -rw-r--r-- | compiler/rustc_ast_passes/src/feature_gate.rs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_ast_passes/src/feature_gate.rs b/compiler/rustc_ast_passes/src/feature_gate.rs index bb83f4c0f0e..5912dd3f931 100644 --- a/compiler/rustc_ast_passes/src/feature_gate.rs +++ b/compiler/rustc_ast_passes/src/feature_gate.rs @@ -565,6 +565,7 @@ pub fn check_crate(krate: &ast::Crate, sess: &Session, features: &Features) { gate_all!(unnamed_fields, "unnamed fields are not yet fully implemented"); gate_all!(fn_delegation, "functions delegation is not yet fully implemented"); gate_all!(postfix_match, "postfix match is experimental"); + gate_all!(mut_ref, "mutable by-reference bindings are experimental"); if !visitor.features.never_patterns { if let Some(spans) = spans.get(&sym::never_patterns) { |