diff -up ./absl/synchronization/internal/graphcycles.cc.gcc11 ./absl/synchronization/internal/graphcycles.cc --- ./absl/synchronization/internal/graphcycles.cc.gcc11 2020-12-19 11:39:31.244272590 -0500 +++ ./absl/synchronization/internal/graphcycles.cc 2020-12-19 11:39:53.069335816 -0500 @@ -37,6 +37,7 @@ #include #include +#include #include "absl/base/internal/hide_ptr.h" #include "absl/base/internal/raw_logging.h" #include "absl/base/internal/spinlock.h"