clang/test/CXX/expr/expr.ass/p9-cxx11.cpp

   1 // RUN: %clang_cc1 -verify -std=c++11 %s
   2
   3 template<typename T> struct complex {
   4   complex(T = T(), T = T());
   5   void operator+=(complex);
   6   T a, b;
   7 };
   8
   9 void std_example() {
  10   complex<double> z;
  11   z = { 1, 2 };
  12   z += { 1, 2 };
  13
  14   int a, b;
  15   a = b = { 1 };
  16   a = { 1 } = b; // expected-error {{initializer list cannot be used on the left hand side of operator '='}}
  17   a = a + { 4 }; // expected-error {{initializer list cannot be used on the right hand side of operator '+'}}
  18   a = { 3 } * { 4 }; // expected-error {{initializer list cannot be used on the left hand side of operator '*'}} \
  19                         expected-error {{initializer list cannot be used on the right hand side of operator '*'}}
  20 }
  21
  22 struct S {
  23   constexpr S(int a, int b) : a(a), b(b) {}
  24   int a, b;
  25 };
  26 struct T {
  27   constexpr int operator=(S s) const { return s.a; }
  28   constexpr int operator+=(S s) const { return s.b; }
  29 };
  30 static_assert((T() = {4, 9}) == 4, "");
  31 static_assert((T() += {4, 9}) == 9, "");
  32
  33 int k1 = T() = { 1, 2 } = { 3, 4 }; // expected-error {{initializer list cannot be used on the left hand side of operator '='}}
  34 int k2 = T() = { 1, 2 } + 1; // expected-error {{initializer list cannot be used on the left hand side of operator '+'}}