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-rw-r--r--docs/ThreadSafetyAnalysis.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/ThreadSafetyAnalysis.rst b/docs/ThreadSafetyAnalysis.rst
index 0a1b804..19ec235 100644
--- a/docs/ThreadSafetyAnalysis.rst
+++ b/docs/ThreadSafetyAnalysis.rst
@@ -857,6 +857,9 @@ implementation.
// Assert that is mutex is currently held for read operations.
void AssertReaderHeld() ASSERT_SHARED_CAPABILITY(this);
+
+ // For negative capabilities.
+ const Mutex& operator!() const { return *this; }
};
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