diff options
Diffstat (limited to 'src/libsyntax/ext')
| -rw-r--r-- | src/libsyntax/ext/tt/macro_rules.rs | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/libsyntax/ext/tt/macro_rules.rs b/src/libsyntax/ext/tt/macro_rules.rs index bd64bb01021..12912044e4e 100644 --- a/src/libsyntax/ext/tt/macro_rules.rs +++ b/src/libsyntax/ext/tt/macro_rules.rs @@ -380,9 +380,14 @@ pub fn compile( .map(|attr| attr .meta_item_list() .map(|list| list.iter() - .map(|it| it.name().unwrap_or_else(|| sess.span_diagnostic.span_bug( - it.span, "allow internal unstable expects feature names", - ))) + .filter_map(|it| { + let name = it.ident().map(|ident| ident.name); + if name.is_none() { + sess.span_diagnostic.span_err(it.span(), + "allow internal unstable expects feature names") + } + name + }) .collect::<Vec<Symbol>>().into() ) .unwrap_or_else(|| { |