diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs index c2e7ecacd20db..83f53ded76b33 100644 --- a/src/libsyntax/parse/parser.rs +++ b/src/libsyntax/parse/parser.rs @@ -3214,6 +3214,10 @@ pub impl Parser { } } } + if fields.len() == 0 { + self.fatal(fmt!("Unit-like struct should be written as: struct %s;", + *self.interner.get(class_name))); + } self.bump(); } else if *self.token == token::LPAREN { // It's a tuple-like struct. diff --git a/src/test/compile-fail/block-must-not-have-result-res.rs b/src/test/compile-fail/block-must-not-have-result-res.rs index 6095d645f483d..8b8bb04c08b5d 100644 --- a/src/test/compile-fail/block-must-not-have-result-res.rs +++ b/src/test/compile-fail/block-must-not-have-result-res.rs @@ -10,7 +10,7 @@ // error-pattern:mismatched types: expected `()` but found `bool` -struct r {} +struct r; impl Drop for r { fn finalize(&self) { diff --git a/src/test/compile-fail/obsolete-syntax.rs b/src/test/compile-fail/obsolete-syntax.rs index cd3be9dc3d9d3..65ba4ed6e0006 100644 --- a/src/test/compile-fail/obsolete-syntax.rs +++ b/src/test/compile-fail/obsolete-syntax.rs @@ -31,9 +31,11 @@ struct s { struct q : r { //~^ ERROR obsolete syntax: class traits + foo: int } struct sss { + bar: int, priv { //~^ ERROR obsolete syntax: private section foo: () diff --git a/src/test/compile-fail/struct-no-fields.rs b/src/test/compile-fail/struct-no-fields.rs new file mode 100644 index 0000000000000..08a590f73965a --- /dev/null +++ b/src/test/compile-fail/struct-no-fields.rs @@ -0,0 +1,14 @@ +// Copyright 2012 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 or the MIT license +// , at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +// error-pattern: Unit-like struct should be written as: struct Foo; +struct Foo {} + +fn main() {}