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-rw-r--r--third_party/nix/src/libexpr/attr-set.hh6
1 files changed, 3 insertions, 3 deletions
diff --git a/third_party/nix/src/libexpr/attr-set.hh b/third_party/nix/src/libexpr/attr-set.hh
index b918bf30ffd2..a9db0db85644 100644
--- a/third_party/nix/src/libexpr/attr-set.hh
+++ b/third_party/nix/src/libexpr/attr-set.hh
@@ -14,7 +14,7 @@ class EvalState;
 struct Value;
 
 /* Map one attribute name to its value. */
-struct Attr {
+struct Attr : public gc {
   Symbol name;
   Value* value;  // TODO(tazjin): Who owns this?
   Pos* pos;      // TODO(tazjin): Who owns this?
@@ -26,9 +26,9 @@ struct Attr {
 // allocator explicitly specified.
 using AttributeMap =
     absl::btree_map<Symbol, Attr, std::less<Symbol>,
-                    gc_allocator<std::pair<const Symbol, Attr>>>;
+                    traceable_allocator<std::pair<const Symbol, Attr>>>;
 
-class Bindings {
+class Bindings : public gc {
  public:
   typedef AttributeMap::iterator iterator;