Check in LLVM r95781.
diff --git a/test/SemaCXX/overloaded-operator-decl.cpp b/test/SemaCXX/overloaded-operator-decl.cpp
new file mode 100644
index 0000000..5f8655c
--- /dev/null
+++ b/test/SemaCXX/overloaded-operator-decl.cpp
@@ -0,0 +1,45 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+struct X {
+ X();
+ X(int);
+};
+
+X operator+(X, X);
+X operator-(X, X) { X x; return x; }
+
+struct Y {
+ Y operator-() const;
+ void operator()(int x = 17) const;
+ int operator[](int);
+
+ static int operator+(Y, Y); // expected-error{{overloaded 'operator+' cannot be a static member function}}
+};
+
+
+void f(X x) {
+ x = operator+(x, x);
+}
+
+X operator+(int, float); // expected-error{{overloaded 'operator+' must have at least one parameter of class or enumeration type}}
+
+X operator*(X, X = 5); // expected-error{{parameter of overloaded 'operator*' cannot have a default argument}}
+
+X operator/(X, X, ...); // expected-error{{overloaded 'operator/' cannot be variadic}}
+
+X operator%(Y); // expected-error{{overloaded 'operator%' must be a binary operator (has 1 parameter)}}
+
+void operator()(Y&, int, int); // expected-error{{overloaded 'operator()' must be a non-static member function}}
+
+typedef int INT;
+typedef float FLOAT;
+Y& operator++(Y&);
+Y operator++(Y&, INT);
+X operator++(X&, FLOAT); // expected-error{{parameter of overloaded post-increment operator must have type 'int' (not 'FLOAT' (aka 'float'))}}
+
+int operator+; // expected-error{{'operator+' cannot be the name of a variable or data member}}
+
+namespace PR6238 {
+ static struct {
+ void operator()();
+ } plus;
+}