Add span for bad doc comment
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs
index 7e15b231..3195435 100644
--- a/src/libsyntax/parse/parser.rs
+++ b/src/libsyntax/parse/parser.rs
@@ -4483,13 +4483,17 @@
}
/// Emit an expected item after attributes error.
- fn expected_item_err(&self, attrs: &[Attribute]) {
+ fn expected_item_err(&mut self, attrs: &[Attribute]) -> PResult<'a, ()> {
let message = match attrs.last() {
Some(&Attribute { is_sugared_doc: true, .. }) => "expected item after doc comment",
_ => "expected item after attributes",
};
- self.span_err(self.prev_span, message);
+ let mut err = self.diagnostic().struct_span_err(self.prev_span, message);
+ if attrs.last().unwrap().is_sugared_doc {
+ err.span_label(self.prev_span, "this doc comment doesn't document anything");
+ }
+ Err(err)
}
/// Parse a statement. This stops just before trailing semicolons on everything but items.
@@ -7636,7 +7640,7 @@
}
None => {
if !attrs.is_empty() {
- self.expected_item_err(&attrs);
+ self.expected_item_err(&attrs)?;
}
self.unexpected()
@@ -7699,7 +7703,7 @@
}
if !attributes_allowed && !attrs.is_empty() {
- self.expected_item_err(&attrs);
+ self.expected_item_err(&attrs)?;
}
Ok(None)
}
