From eda626cfc9659658a89cc28680066f69aef11b0e Mon Sep 17 00:00:00 2001
From: Seiichi Uchida <seuchida@gmail.com>
Date: Thu, 15 Mar 2018 18:55:52 +0900
Subject: [PATCH] Call syntax::with_globals before using a parser

---
 src/lib.rs    |  8 ++++++++
 src/macros.rs | 29 +++++++++++++++++------------
 2 files changed, 25 insertions(+), 12 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 9857abe2b52..37cf29196ac 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -657,6 +657,14 @@ pub fn format_code_block(code_snippet: &str, config: &Config) -> Option<String>
 }
 
 pub fn format_input<T: Write>(
+    input: Input,
+    config: &Config,
+    out: Option<&mut T>,
+) -> Result<(Summary, FileMap, FormatReport), (io::Error, Summary)> {
+    syntax::with_globals(|| format_input_inner(input, config, out))
+}
+
+fn format_input_inner<T: Write>(
     input: Input,
     config: &Config,
     mut out: Option<&mut T>,
diff --git a/src/macros.rs b/src/macros.rs
index 78a8f0c0b31..b260e15501f 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -962,22 +962,27 @@ fn format_lazy_static(context: &RewriteContext, shape: Shape, ts: &TokenStream)
 #[cfg(test)]
 mod test {
     use super::*;
+    use syntax;
     use syntax::parse::{parse_stream_from_source_str, ParseSess};
     use syntax::codemap::{FileName, FilePathMapping};
 
     fn format_macro_args_str(s: &str) -> String {
-        let input = parse_stream_from_source_str(
-            FileName::Custom("stdin".to_owned()),
-            s.to_owned(),
-            &ParseSess::new(FilePathMapping::empty()),
-            None,
-        );
-        let shape = Shape {
-            width: 100,
-            indent: Indent::empty(),
-            offset: 0,
-        };
-        format_macro_args(input.into(), shape).unwrap()
+        let mut result = String::new();
+        syntax::with_globals(|| {
+            let input = parse_stream_from_source_str(
+                FileName::Custom("stdin".to_owned()),
+                s.to_owned(),
+                &ParseSess::new(FilePathMapping::empty()),
+                None,
+            );
+            let shape = Shape {
+                width: 100,
+                indent: Indent::empty(),
+                offset: 0,
+            };
+            result = format_macro_args(input.into(), shape).unwrap();
+        });
+        result
     }
 
     #[test]