clang/test/Parser/cxx-member-initializers.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
   2
   3 struct x {
   4   x() : a(4) ; // expected-error {{expected '{'}}
   5 };
   6
   7 struct y {
   8   int a;
   9   y() : a(4) ; // expected-error {{expected '{'}}
  10 };
  11
  12 struct z {
  13   int a;
  14   z() : a {}
  15 }; // expected-error {{expected '{'}}
  16
  17 namespace PR16480 {
  18   template<int n> struct X {
  19     X();
  20     X(int);
  21   };
  22
  23   struct A : X<0> {
  24     A() : X<a<b>{0}.n>() {}
  25
  26     template<int> struct a {
  27       int n;
  28     };
  29
  30     static const int b = 1;
  31   };
  32
  33   struct B : X<0> {
  34     B() : X<a<b>{0} {}
  35
  36     static const int a = 0, b = 0;
  37   };
  38
  39   template<int> struct a {
  40     constexpr a(int) {}
  41     constexpr operator int() const { return 0; }
  42   };
  43
  44   struct C : X<0> {
  45     C() : X<a<b>(0)>() {}
  46
  47     static const int b = 0;
  48   };
  49
  50   struct D : X<0> {
  51     D() : X<a<b>(0) {}
  52
  53     static const int a = 0, b = 0;
  54   };
  55
  56   template<typename T> struct E : X<0> {
  57     E(X<0>) : X<(0)>{} {}
  58     E(X<1>) : X<int{}>{} {}
  59     E(X<2>) : X<(0)>() {}
  60     E(X<3>) : X<int{}>() {}
  61   };
  62
  63   // FIXME: This should be valid in the union of C99 and C++11.
  64   struct F : X<0> {
  65     F() : X<A<T>().n + (T){}.n>{} {} // expected-error +{{}} expected-note {{to match}}
  66
  67     struct T { int n; };
  68     template<typename> struct A { int n; };
  69   };
  70
  71   // FIXME: This is valid now, but may be made ill-formed by DR1607.
  72   struct G : X<0> {
  73     G() : X<0 && [](){return 0;}()>{} // expected-error +{{}} expected-note {{to match}}
  74   };
  75
  76   struct Errs : X<0> {
  77     Errs(X<0>) : decltype X<0>() {} // expected-error {{expected '(' after 'decltype'}}
  78     Errs(X<1>) : what is this () {} // expected-error {{expected '(' or '{'}}
  79     Errs(X<2>) : decltype(X<0> // expected-note {{to match this '('}}
  80   }; // expected-error {{expected ')'}}
  81 }
  82
  83 template <class U, class V> struct C {
  84   int f() { return 4; }
  85   class C1 {};
  86 };
  87
  88 class D {};
  89 namespace N {
  90 struct E {
  91   class F {};
  92 };
  93 }
  94
  95 class G {
  96   // These are all valid:
  97   void f(int x = C<int, D>().f()) {}
  98   void g(int x = C<int, ::D>().f()) {}
  99   void h(int x = C<int, N::E>().f()) {}
 100   void i(int x = C<int, ::N::E>().f()) {}
 101   void j(int x = C<int, decltype(N::E())::F>().f()) {}
 102   void k(int x = C<int, C<int, int>>().f()) {}
 103   void l(int x = C<int, C<int, int>::C1>().f()) {}
 104
 105   // This isn't, but it shouldn't crash. The diagnostics don't matter much.
 106   void m(int x = C<int, union int>().f()) {}
 107   // expected-error@-1 {{declaration of anonymous union must be a definition}}
 108   // expected-error@-2 {{type name requires a specifier or qualifier}}
 109   // expected-error@-3 {{expected '>'}}
 110   // expected-note@-4 {{to match this '<'}}
 111 };