import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

build/clang-plugin/tests/TestNoDuplicateRefCntMember.cpp

@@ -0,0 +1,49 @@
+class C1 {};
+
+class RC1 {
+public:
+  virtual void AddRef();
+  virtual void Release();
+
+private:
+  int mRefCnt; // expected-note 2 {{Superclass 'RC1' also has an mRefCnt member}} expected-note 3 {{Superclass 'RC1' has an mRefCnt member}}
+};
+
+class RC2 : public RC1 { // expected-error {{Refcounted record 'RC2' has multiple mRefCnt members}}
+public:
+  virtual void AddRef();
+  virtual void Release();
+
+private:
+  int mRefCnt; // expected-note {{Consider using the _INHERITED macros for AddRef and Release here}}
+};
+
+class C2 : public RC1 {};
+
+class RC3 : public RC1 {};
+
+class RC4 : public RC3, public C2 {}; // expected-error {{Refcounted record 'RC4' has multiple superclasses with mRefCnt members}}
+
+class RC5 : public RC1 {};
+
+class RC6 : public C1, public RC5 { // expected-error {{Refcounted record 'RC6' has multiple mRefCnt members}}
+public:
+  virtual void AddRef();
+  virtual void Release();
+
+private:
+  int mRefCnt; // expected-note {{Consider using the _INHERITED macros for AddRef and Release here}}
+};
+
+class Predecl;
+
+class OtherRC {
+public:
+  virtual void AddRef();
+  virtual void Release();
+
+private:
+  int mRefCnt; // expected-note {{Superclass 'OtherRC' has an mRefCnt member}}
+};
+
+class MultRCSuper : public RC1, public OtherRC {}; // expected-error {{Refcounted record 'MultRCSuper' has multiple superclasses with mRefCnt members}}