From eed86fac91c12707b8ef6693a5cf2106ca6652c0 Mon Sep 17 00:00:00 2001
From: Geoffry Song <goffrie@gmail.com>
Date: Mon, 17 Oct 2016 21:01:36 -0700
Subject: Don't spin expanding stmt macros.

If we can't make progress when parsing a macro expansion as a statement
then we should just bail.

This alleviates the symptoms shown in e.g. #37113 but it doesn't fix the
problem that parsing invalid enum bodies (and others) leaves the parser
in a crappy state.
---
 src/test/parse-fail/issue-37234.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 src/test/parse-fail/issue-37234.rs

(limited to 'src/test')

diff --git a/src/test/parse-fail/issue-37234.rs b/src/test/parse-fail/issue-37234.rs
new file mode 100644
index 00000000000..651e11d9d21
--- /dev/null
+++ b/src/test/parse-fail/issue-37234.rs
@@ -0,0 +1,19 @@
+// Copyright 2016 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 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+macro_rules! failed {
+    () => {{
+        let x = 5 ""; //~ ERROR found `""`
+    }} //~ ERROR macro expansion ignores token `}`
+}
+
+fn main() {
+    failed!();
+}
-- 
cgit 1.4.1-3-g733a5