clang/test/CXX/class/class.mem/p1b.cpp

   1 // The first run checks that the correct errors are generated,
   2 // implicitly checking the order of default argument parsing:
   3 // RUN: %clang_cc1 -fsyntax-only -verify %s
   4 // The second run checks the order of inline method definitions:
   5 // RUN: not %clang_cc1 -fsyntax-only %s 2> %t
   6 // RUN: FileCheck %s < %t
   7
   8 class A {
   9 public:
  10   void a1() {
  11     B b = B();
  12   }
  13
  14   class B;
  15   void a2(B b = B()); // expected-error{{use of default argument to function 'B' that is declared later in class 'B'}}
  16
  17   void a3(int a = 42);
  18
  19   // CHECK: error: use of undeclared identifier 'first'
  20   void a4(int a = first); // expected-error{{use of undeclared identifier 'first'}}
  21
  22   class B {
  23   public:
  24     B(int b = 42) { // expected-note{{default argument declared here}}
  25       A a;
  26       a.a3();
  27       a.a6();
  28     }
  29
  30     void b1(A a = A()); // expected-error{{use of default argument to function 'A' that is declared later in class 'A'}}
  31
  32     // CHECK: error: use of undeclared identifier 'second'
  33     void b2(int a = second); // expected-error{{use of undeclared identifier 'second'}}
  34   };
  35
  36   void a5() {
  37     B b = B();
  38   }
  39
  40   void a6(B b = B());
  41
  42   A(int a = 42); // expected-note{{default argument declared here}}
  43
  44   // CHECK: error: use of undeclared identifier 'third'
  45   void a7(int a = third); // expected-error{{use of undeclared identifier 'third'}}
  46 };