---

yaml
---
r: 227565
b: refs/heads/try
c: 09ed27c
h: refs/heads/master
i:
  227563: f386041
v: v3

Author: nagisa

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: aca2057ed5fb7af3f8905b2bc01f72fa001c35c8
 refs/heads/snap-stage3: 1af31d4974e33027a68126fa5a5a3c2c6491824f
-refs/heads/try: ca72d7fe3fd2134f4b6b633f625929c4d30720f9
+refs/heads/try: 09ed27c05ec8f936294ca6eba1adae35144b2460
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try/src/libsyntax/ext/base.rs

@@ -681,7 +681,6 @@ impl<'a> ExtCtxt<'a> {
     pub fn expansion_cause(&self) -> Span {
         let mut expn_id = self.backtrace;
         let mut last_macro = None;
-        let mut current_expn = None;
         loop {
             if self.codemap().with_expn_info(expn_id, |info| {
                 info.map_or(None, |i| {
@@ -690,7 +689,6 @@ impl<'a> ExtCtxt<'a> {
                         return None;
                     }
                     expn_id = i.call_site.expn_id;
-                    current_expn = Some(i.call_site);
                     if i.callee.format != CompilerExpansion {
                         last_macro = Some(i.call_site)
                     }