diff options
Diffstat (limited to 'compiler')
| -rw-r--r-- | compiler/rustc_ast_passes/src/ast_validation.rs | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/compiler/rustc_ast_passes/src/ast_validation.rs b/compiler/rustc_ast_passes/src/ast_validation.rs index ba4b6130b60..d02b8510975 100644 --- a/compiler/rustc_ast_passes/src/ast_validation.rs +++ b/compiler/rustc_ast_passes/src/ast_validation.rs @@ -1088,7 +1088,15 @@ impl<'a> Visitor<'a> for AstValidator<'a> { } } } else if let &Safety::Unsafe(span) = safety { - this.dcx().emit_err(errors::UnsafeItem { span, kind: "extern block" }); + let mut diag = this + .dcx() + .create_err(errors::UnsafeItem { span, kind: "extern block" }); + rustc_session::parse::add_feature_diagnostics( + &mut diag, + self.session, + sym::unsafe_extern_blocks, + ); + diag.emit(); } if abi.is_none() { |