1 files changed, 5 insertions, 0 deletions
diff --git a/absl/base/internal/low_level_scheduling.h b/absl/base/internal/low_level_scheduling.h
index 961cc981..7c52d48c 100644
--- a/absl/base/internal/low_level_scheduling.h
+++ b/absl/base/internal/low_level_scheduling.h
@@ -29,6 +29,9 @@ extern "C" void __google_enable_rescheduling(bool disable_result);
 
 namespace absl {
 ABSL_NAMESPACE_BEGIN
+class CondVar;
+class Mutex;
+
 namespace base_internal {
 
 class SchedulingHelper;  // To allow use of SchedulingGuard.
@@ -77,6 +80,8 @@ class SchedulingGuard {
   };
 
   // Access to SchedulingGuard is explicitly white-listed.
+  friend class absl::CondVar;
+  friend class absl::Mutex;
   friend class SchedulingHelper;
   friend class SpinLock;