diff options
| -rw-r--r-- | src/libsyntax/ext/expand.rs | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/libsyntax/ext/expand.rs b/src/libsyntax/ext/expand.rs index 377f47a3ea5..3e75afcee1c 100644 --- a/src/libsyntax/ext/expand.rs +++ b/src/libsyntax/ext/expand.rs @@ -484,13 +484,15 @@ impl<'a, 'b> MacroExpander<'a, 'b> { match *ext { MultiModifier(ref mac) => { - let meta = attr.parse_meta(self.cx.parse_sess).ok()?; + let meta = attr.parse_meta(self.cx.parse_sess) + .map_err(|mut e| { e.emit(); }).ok()?; let item = mac.expand(self.cx, attr.span, &meta, item); Some(kind.expect_from_annotatables(item)) } MultiDecorator(ref mac) => { let mut items = Vec::new(); - let meta = attr.parse_meta(self.cx.parse_sess).ok()?; + let meta = attr.parse_meta(self.cx.parse_sess) + .expect("derive meta should already have been parsed"); mac.expand(self.cx, attr.span, &meta, &item, &mut |item| items.push(item)); items.push(item); Some(kind.expect_from_annotatables(items)) |