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| author | Jeffrey Seyfried <jeffrey.seyfried@gmail.com> | 2016-09-25 23:38:22 +0000 |
|---|---|---|
| committer | Jeffrey Seyfried <jeffrey.seyfried@gmail.com> | 2016-09-26 00:22:40 +0000 |
| commit | 77958d56bccd11b490afac356e6d9c11f07632bb (patch) | |
| tree | 09a684f50f639765ec165668a3ef85416d0e0da7 /src/librustc_resolve | |
| parent | 5fc14c1a6f66c2d9300afd282210fe743878c9a7 (diff) | |
| download | rust-77958d56bccd11b490afac356e6d9c11f07632bb.tar.gz rust-77958d56bccd11b490afac356e6d9c11f07632bb.zip | |
Forbid user-defined macros named "macro_rules".
Diffstat (limited to 'src/librustc_resolve')
| -rw-r--r-- | src/librustc_resolve/macros.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/librustc_resolve/macros.rs b/src/librustc_resolve/macros.rs index 37cb2861c1c..292669c592a 100644 --- a/src/librustc_resolve/macros.rs +++ b/src/librustc_resolve/macros.rs @@ -53,6 +53,9 @@ impl<'a> base::Resolver for Resolver<'a> { } fn add_macro(&mut self, scope: Mark, mut def: ast::MacroDef) { + if &def.ident.name.as_str() == "macro_rules" { + self.session.span_err(def.span, "user-defined macros may not be named `macro_rules`"); + } if def.use_locally { let ext = macro_rules::compile(&self.session.parse_sess, &def); self.add_ext(scope, def.ident, Rc::new(ext)); |