clang/test/Parser/cxx-default-args.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 // PR6647
   4 class C {
   5   // After the error, the rest of the tokens inside the default arg should be
   6   // skipped, avoiding a "expected ';' after class" after 'undecl'.
   7   void m(int x = undecl + 0); // expected-error {{use of undeclared identifier 'undecl'}}
   8 };
   9
  10 typedef struct Inst {
  11   void m(int x=0);
  12 } *InstPtr;
  13
  14 struct X {
  15   void f(int x = 1:); // expected-error {{unexpected end of default argument expression}}
  16 };
  17
  18 // PR13657
  19 struct T {
  20   template <typename A, typename B> struct T1 { enum {V};};
  21   template <int A, int B> struct T2 { enum {V}; };
  22   template <int, int> static int func(int);
  23
  24
  25   void f1(T1<int, int> = T1<int, int>());
  26   void f2(T1<int, double> = T1<int, double>(), T2<0, 5> = T2<0, 5>());
  27   void f3(int a = T2<0, (T1<int, int>::V > 10) ? 5 : 6>::V, bool b = 4<5 );
  28   void f4(bool a = 1 < 0, bool b = 2 > 0 );
  29   void f5(bool a = 1 > T2<0, 0>::V, bool b = T1<int,int>::V < 3, int c = 0);
  30   void f6(bool a = T2<0,3>::V < 4, bool b = 4 > T2<0,3>::V);
  31   void f7(bool a = T1<int, bool>::V < 3);
  32   void f8(int = func<0,1<2>(0), int = 1<0, T1<int,int>(int) = 0);
  33 };
  34
  35 struct S {
  36   void f(int &r = error);  // expected-error {{use of undeclared identifier 'error'}}
  37 };
  38
  39 struct U {
  40   void i(int x = ) {} // expected-error{{expected expression}}
  41   typedef int *fp(int x = ); // expected-error{{default arguments can only be specified for parameters in a function declaration}}
  42 };