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-rw-r--r--absl/synchronization/internal/graphcycles.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/absl/synchronization/internal/graphcycles.cc b/absl/synchronization/internal/graphcycles.cc
index d7ae0cf320d7..9bc9c8a0f00d 100644
--- a/absl/synchronization/internal/graphcycles.cc
+++ b/absl/synchronization/internal/graphcycles.cc
@@ -28,6 +28,7 @@
 // (2) When a new edge (x->y) is inserted, do nothing if rank[x] < rank[y].
 // (3) Otherwise: adjust ranks in the neighborhood of x and y.
 
+#include "absl/base/attributes.h"
 // This file is a no-op if the required LowLevelAlloc support is missing.
 #include "absl/base/internal/low_level_alloc.h"
 #ifndef ABSL_LOW_LEVEL_ALLOC_MISSING