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-rw-r--r--third_party/nix/src/libexpr/attr-set.hh3
1 files changed, 2 insertions, 1 deletions
diff --git a/third_party/nix/src/libexpr/attr-set.hh b/third_party/nix/src/libexpr/attr-set.hh
index 39af7c482eab..4ae908964cd1 100644
--- a/third_party/nix/src/libexpr/attr-set.hh
+++ b/third_party/nix/src/libexpr/attr-set.hh
@@ -31,7 +31,7 @@ inline bool operator==(const Attr& lhs, const Attr& rhs) {
 
 class Bindings {
  public:
-  typedef Attr* iterator;  // TODO: type, and also 'using'?
+  typedef absl::btree_map<Symbol, Attr>::iterator iterator;
 
   // Return the number of contained elements.
   size_t size();
@@ -71,4 +71,5 @@ class Bindings {
  private:
   absl::btree_map<Symbol, Attr> attributes_;
 };
+
 }  // namespace nix