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-rw-r--r--absl/synchronization/mutex.cc1
-rw-r--r--absl/synchronization/mutex.h2
2 files changed, 2 insertions, 1 deletions
diff --git a/absl/synchronization/mutex.cc b/absl/synchronization/mutex.cc
index df7577b5..3aa5560a 100644
--- a/absl/synchronization/mutex.cc
+++ b/absl/synchronization/mutex.cc
@@ -36,6 +36,7 @@
#include <algorithm>
#include <atomic>
#include <cstddef>
+#include <cstdlib>
#include <cstring>
#include <thread> // NOLINT(build/c++11)
diff --git a/absl/synchronization/mutex.h b/absl/synchronization/mutex.h
index 184a585a..2fd077c8 100644
--- a/absl/synchronization/mutex.h
+++ b/absl/synchronization/mutex.h
@@ -513,7 +513,7 @@ class ABSL_LOCKABLE Mutex {
base_internal::PerThreadSynch* w); // used for CondVar->Mutex transfer
// Catch the error of writing Mutex when intending MutexLock.
- Mutex(const volatile Mutex* /*ignored*/) {} // NOLINT(runtime/explicit)
+ explicit Mutex(const volatile Mutex* /*ignored*/) {}
Mutex(const Mutex&) = delete;
Mutex& operator=(const Mutex&) = delete;