diff options
Diffstat (limited to 'compiler/rustc_expand/src/base.rs')
| -rw-r--r-- | compiler/rustc_expand/src/base.rs | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/compiler/rustc_expand/src/base.rs b/compiler/rustc_expand/src/base.rs index e3dc793a7fa..ca304c05cdc 100644 --- a/compiler/rustc_expand/src/base.rs +++ b/compiler/rustc_expand/src/base.rs @@ -756,8 +756,8 @@ impl SyntaxExtension { name: Symbol, attrs: &[ast::Attribute], ) -> SyntaxExtension { - let allow_internal_unstable = attr::allow_internal_unstable(sess, &attrs) - .map(|features| features.collect::<Vec<Symbol>>().into()); + let allow_internal_unstable = + Some(attr::allow_internal_unstable(sess, &attrs).collect::<Vec<Symbol>>().into()); let mut local_inner_macros = false; if let Some(macro_export) = sess.find_by_name(attrs, sym::macro_export) { |