diff options
| -rw-r--r-- | compiler/rustc_expand/src/base.rs | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/compiler/rustc_expand/src/base.rs b/compiler/rustc_expand/src/base.rs index 666065efdfb..dd93fe8350e 100644 --- a/compiler/rustc_expand/src/base.rs +++ b/compiler/rustc_expand/src/base.rs @@ -775,7 +775,7 @@ impl SyntaxExtension { attrs: &[ast::Attribute], ) -> SyntaxExtension { let allow_internal_unstable = - Some(attr::allow_internal_unstable(sess, &attrs).collect::<Vec<Symbol>>().into()); + attr::allow_internal_unstable(sess, &attrs).collect::<Vec<Symbol>>(); let mut local_inner_macros = false; if let Some(macro_export) = sess.find_by_name(attrs, sym::macro_export) { @@ -803,7 +803,8 @@ impl SyntaxExtension { SyntaxExtension { kind, span, - allow_internal_unstable, + allow_internal_unstable: (!allow_internal_unstable.is_empty()) + .then(|| allow_internal_unstable.into()), allow_internal_unsafe: sess.contains_name(attrs, sym::allow_internal_unsafe), local_inner_macros, stability: stability.map(|(s, _)| s), |