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-rw-r--r--absl/container/btree_set.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/absl/container/btree_set.h b/absl/container/btree_set.h
index 6e47b4aae6..2a4d0aceb3 100644
--- a/absl/container/btree_set.h
+++ b/absl/container/btree_set.h
@@ -51,6 +51,7 @@
 #include "absl/container/internal/btree_container.h"  // IWYU pragma: export
 
 namespace absl {
+ABSL_NAMESPACE_BEGIN
 
 // absl::btree_set<>
 //
@@ -648,6 +649,7 @@ void swap(btree_multiset<K, C, A> &x, btree_multiset<K, C, A> &y) {
   return x.swap(y);
 }
 
+ABSL_NAMESPACE_END
 }  // namespace absl
 
 #endif  // ABSL_CONTAINER_BTREE_SET_H_