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-rw-r--r--core/fxcrt/cfx_weak_ptr.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/core/fxcrt/cfx_weak_ptr.h b/core/fxcrt/cfx_weak_ptr.h
index 9ac1475884..f679696992 100644
--- a/core/fxcrt/cfx_weak_ptr.h
+++ b/core/fxcrt/cfx_weak_ptr.h
@@ -7,6 +7,7 @@
#ifndef CORE_FXCRT_CFX_WEAK_PTR_H_
#define CORE_FXCRT_CFX_WEAK_PTR_H_
+#include <cstddef>
#include <memory>
#include "core/fxcrt/cfx_retain_ptr.h"
@@ -21,6 +22,9 @@ class CFX_WeakPtr {
CFX_WeakPtr(std::unique_ptr<T, D> pObj)
: m_pHandle(new Handle(std::move(pObj))) {}
+ // Deliberately implicit to allow passing nullptr.
+ CFX_WeakPtr(std::nullptr_t arg) {}
+
explicit operator bool() const { return m_pHandle && !!m_pHandle->Get(); }
bool HasOneRef() const { return m_pHandle && m_pHandle->HasOneRef(); }
T* operator->() { return m_pHandle->Get(); }