1 files changed, 210 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/addr-of-overloaded-function.cpp b/clang/test/SemaCXX/addr-of-overloaded-function.cpp
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+++ b/clang/test/SemaCXX/addr-of-overloaded-function.cpp
@@ -0,0 +1,210 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s 
+int f(double); // expected-note{{candidate function}}
+int f(int); // expected-note{{candidate function}}
+
+int (*pfd)(double) = f; // selects f(double)
+int (*pfd2)(double) = &f; // selects f(double)
+int (*pfd3)(double) = ((&((f)))); // selects f(double)
+int (*pfi)(int) = &f;    // selects f(int)
+// FIXME: This error message is not very good. We need to keep better
+// track of what went wrong when the implicit conversion failed to
+// give a better error message here.
+int (*pfe)(...) = &f;    // expected-error{{address of overloaded function 'f' does not match required type 'int (...)'}}
+int (&rfi)(int) = f;     // selects f(int)
+int (&rfd)(double) = f;  // selects f(double)
+
+void g(int (*fp)(int));   // expected-note{{candidate function}}
+void g(int (*fp)(float));
+void g(int (*fp)(double)); // expected-note{{candidate function}}
+
+int g1(int);
+int g1(char);
+
+int g2(int);
+int g2(double);
+
+template<typename T> T g3(T);
+int g3(int);
+int g3(char);
+
+void g_test() {
+  g(g1);
+  g(g2); // expected-error{{call to 'g' is ambiguous}}
+  g(g3);
+}
+
+template<typename T> T h1(T);
+template<typename R, typename A1> R h1(A1);
+int h1(char);
+
+void ha(int (*fp)(int));
+void hb(int (*fp)(double));
+
+void h_test() {
+  ha(h1);
+  hb(h1);
+}
+
+struct A { };
+void f(void (*)(A *));
+
+struct B
+{
+  void g() { f(d); }
+  void d(void *);
+  static void d(A *);
+};
+
+struct C {
+  C &getC() {
+    return makeAC; // expected-error{{reference to non-static member function must be called}}
+  }
+
+  C &makeAC();
+  const C &makeAC() const;
+
+  static void f(); // expected-note{{candidate function}}
+  static void f(int); // expected-note{{candidate function}}
+
+  void g() {
+    int (&fp)() = f; // expected-error{{address of overloaded function 'f' does not match required type 'int ()'}}
+  }
+};
+
+// PR6886
+namespace test0 {
+  void myFunction(void (*)(void *));
+
+  class Foo {
+    void foo();
+
+    static void bar(void*);
+    static void bar();
+  };
+
+  void Foo::foo() {
+    myFunction(bar);
+  }
+}
+
+namespace PR7971 {
+  struct S {
+    void g() {
+      f(&g);
+    }
+    void f(bool (*)(int, char));
+    static bool g(int, char);
+  };
+}
+
+namespace PR8033 {
+  template <typename T1, typename T2> int f(T1 *, const T2 *); // expected-note {{candidate function [with T1 = const int, T2 = int]}} \
+  // expected-note{{candidate function}}
+  template <typename T1, typename T2> int f(const T1 *, T2 *); // expected-note {{candidate function [with T1 = int, T2 = const int]}} \
+  // expected-note{{candidate function}}
+  int (*p)(const int *, const int *) = f; // expected-error{{address of overloaded function 'f' is ambiguous}} \
+  // expected-error{{address of overloaded function 'f' is ambiguous}}
+
+}
+
+namespace PR8196 {
+  template <typename T> struct mcdata {
+    typedef int result_type;
+  };
+  template <class T> 
+    typename mcdata<T>::result_type wrap_mean(mcdata<T> const&);
+  void add_property(double(*)(mcdata<double> const &)); // expected-note{{candidate function not viable: no overload of 'wrap_mean' matching}}
+  void f() {
+    add_property(&wrap_mean); // expected-error{{no matching function for call to 'add_property'}}
+  }
+}
+
+namespace PR7425 {
+  template<typename T>
+  void foo()
+  {
+  }
+
+  struct B
+  {
+    template<typename T>
+    B(const T&)
+    {
+    }
+  };
+
+  void bar(const B& b)
+  {
+  }
+
+  void bar2(const B& b = foo<int>)
+  {
+  }
+
+  void test(int argc, char** argv)
+  {
+    bar(foo<int>);
+    bar2();
+  }
+}
+
+namespace test1 {
+  void fun(int x) {}
+
+  void parameter_number() {
+    void (*ptr1)(int, int) = &fun; // expected-error {{cannot initialize a variable of type 'void (*)(int, int)' with an rvalue of type 'void (*)(int)': different number of parameters (2 vs 1)}}
+    void (*ptr2)(int, int);
+    ptr2 = &fun;  // expected-error {{assigning to 'void (*)(int, int)' from incompatible type 'void (*)(int)': different number of parameters (2 vs 1)}}
+  }
+
+  void parameter_mismatch() {
+    void (*ptr1)(double) = &fun; // expected-error {{cannot initialize a variable of type 'void (*)(double)' with an rvalue of type 'void (*)(int)': type mismatch at 1st parameter ('double' vs 'int')}}
+    void (*ptr2)(double);
+    ptr2 = &fun; // expected-error {{assigning to 'void (*)(double)' from incompatible type 'void (*)(int)': type mismatch at 1st parameter ('double' vs 'int')}}
+  }
+
+  void return_type_test() {
+    int (*ptr1)(int) = &fun; // expected-error {{cannot initialize a variable of type 'int (*)(int)' with an rvalue of type 'void (*)(int)': different return type ('int' vs 'void')}}
+    int (*ptr2)(int);
+    ptr2 = &fun;  // expected-error {{assigning to 'int (*)(int)' from incompatible type 'void (*)(int)': different return type ('int' vs 'void')}}
+  }
+
+  int foo(double x, double y) {return 0;} // expected-note {{candidate function has different number of parameters (expected 1 but has 2)}}
+  int foo(int x, int y) {return 0;} // expected-note {{candidate function has different number of parameters (expected 1 but has 2)}}
+  int foo(double x) {return 0;} // expected-note {{candidate function has type mismatch at 1st parameter (expected 'int' but has 'double')}}
+  double foo(float x, float y) {return 0;} // expected-note {{candidate function has different number of parameters (expected 1 but has 2)}}
+  double foo(int x, float y) {return 0;} // expected-note {{candidate function has different number of parameters (expected 1 but has 2)}}
+  double foo(float x) {return 0;} // expected-note {{candidate function has type mismatch at 1st parameter (expected 'int' but has 'float')}}
+  double foo(int x) {return 0;} // expected-note {{candidate function has different return type ('int' expected but has 'double')}}
+  
+  int (*ptr)(int) = &foo; // expected-error {{address of overloaded function 'foo' does not match required type 'int (int)'}}
+
+  struct Qualifiers {
+    void N() {};
+    void C() const {};
+    void V() volatile {};
+    void R() __restrict {};
+    void CV() const volatile {};
+    void CR() const __restrict {};
+    void VR() volatile __restrict {};
+    void CVR() const volatile __restrict {};
+  };
+
+
+  void QualifierTest() {
+    void (Qualifiers::*X)();
+    X = &Qualifiers::C; // expected-error {{assigning to 'void (test1::Qualifiers::*)()' from incompatible type 'void (test1::Qualifiers::*)() const': different qualifiers (none vs const)}}
+    X = &Qualifiers::V; // expected-error{{assigning to 'void (test1::Qualifiers::*)()' from incompatible type 'void (test1::Qualifiers::*)() volatile': different qualifiers (none vs volatile)}}
+    X = &Qualifiers::R; // expected-error{{assigning to 'void (test1::Qualifiers::*)()' from incompatible type 'void (test1::Qualifiers::*)() restrict': different qualifiers (none vs restrict)}}
+    X = &Qualifiers::CV; // expected-error{{assigning to 'void (test1::Qualifiers::*)()' from incompatible type 'void (test1::Qualifiers::*)() const volatile': different qualifiers (none vs const and volatile)}}
+    X = &Qualifiers::CR; // expected-error{{assigning to 'void (test1::Qualifiers::*)()' from incompatible type 'void (test1::Qualifiers::*)() const restrict': different qualifiers (none vs const and restrict)}}
+    X = &Qualifiers::VR; // expected-error{{assigning to 'void (test1::Qualifiers::*)()' from incompatible type 'void (test1::Qualifiers::*)() volatile restrict': different qualifiers (none vs volatile and restrict)}}
+    X = &Qualifiers::CVR; // expected-error{{assigning to 'void (test1::Qualifiers::*)()' from incompatible type 'void (test1::Qualifiers::*)() const volatile restrict': different qualifiers (none vs const, volatile, and restrict)}}
+  }
+
+  struct Dummy {
+    void N() {};
+  };
+
+  void (Qualifiers::*X)() = &Dummy::N; // expected-error{{cannot initialize a variable of type 'void (test1::Qualifiers::*)()' with an rvalue of type 'void (test1::Dummy::*)()': different classes ('test1::Qualifiers' vs 'test1::Dummy')}}
+}