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-rw-r--r--src/libsyntax/ext/base.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libsyntax/ext/base.rs b/src/libsyntax/ext/base.rs
index 0e05cce35e2..6c96692f719 100644
--- a/src/libsyntax/ext/base.rs
+++ b/src/libsyntax/ext/base.rs
@@ -665,6 +665,7 @@ pub struct ExtCtxt<'a> {
     pub parse_sess: &'a parse::ParseSess,
     pub ecfg: expand::ExpansionConfig<'a>,
     pub crate_root: Option<&'static str>,
+    pub root_path: PathBuf,
     pub resolver: &'a mut Resolver,
     pub resolve_err_count: usize,
     pub current_expansion: ExpansionData,
@@ -680,6 +681,7 @@ impl<'a> ExtCtxt<'a> {
             parse_sess,
             ecfg,
             crate_root: None,
+            root_path: PathBuf::new(),
             resolver,
             resolve_err_count: 0,
             current_expansion: ExpansionData {