diff options
Diffstat (limited to 'src/libsyntax')
| -rw-r--r-- | src/libsyntax/feature_gate.rs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs index a0c089aff21..94b5cf46dd1 100644 --- a/src/libsyntax/feature_gate.rs +++ b/src/libsyntax/feature_gate.rs @@ -867,6 +867,8 @@ impl<'a, 'v> Visitor<'v> for PostExpansionVisitor<'a> { self.context.span_handler.span_err(span, "empty tuple structs and enum variants \ are not allowed, use unit structs and \ enum variants instead"); + self.context.span_handler.span_help(span, "remove trailing () to make a unit \ + struct or unit enum varian"); } } visit::walk_struct_def(self, s) |