clang/test/Misc/diag-template-diffing-cxx98.cpp

   1 // RUN: not %clang_cc1 -fsyntax-only %s -std=c++98 2>&1 | FileCheck %s
   2
   3 namespace PR14342 {
   4   template<typename T, char a> struct X {};
   5   X<int, 1> x = X<long, 257>();
   6   // CHECK: error: no viable conversion from 'X<long, [...]>' to 'X<int, [...]>'
   7 }
   8
   9 namespace PR15513 {
  10   template <int x, int y = x+1>
  11   class A {};
  12
  13   void foo(A<0> &M) {
  14     // CHECK: no viable conversion from 'A<[...], (default) x + 1 aka 1>' to 'A<[...], 0>'
  15     A<0, 0> N = M;
  16    // CHECK: no viable conversion from 'A<0, [...]>' to 'A<1, [...]>'
  17     A<1, 1> O = M;
  18   }
  19 }
  20
  21 namespace default_args {
  22   template <int x, int y = 1+1, int z = 2>
  23   class A {};
  24
  25   void foo(A<0> &M) {
  26     // CHECK: no viable conversion from 'A<[...], (default) 1 + 1 aka 2, (default) 2>' to 'A<[...], 0, 0>'
  27     A<0, 0, 0> N = M;
  28
  29     // CHECK: no viable conversion from 'A<[2 * ...], (default) 2>' to 'A<[2 * ...], 0>'
  30     A<0, 2, 0> N2 = M;
  31   }
  32
  33 }
  34
  35 namespace qualifiers {
  36   template <class T>
  37   void foo(void (func(T*)), T*) {}
  38
  39   template <class T>
  40   class vector{};
  41
  42   void bar(const vector<int>*) {}
  43
  44   void test(volatile vector<int>* V) {
  45     foo(bar, V);
  46   }
  47
  48   // CHECK: candidate template ignored: deduced conflicting types for parameter 'T' ('const vector<...>' vs. 'volatile vector<...>')
  49 }
  50
  51 namespace integers {
  52   template <int x>
  53   class wrapper{};
  54
  55   template <int x>
  56   class foo {
  57    public:
  58     wrapper<x> make();
  59   };
  60
  61   wrapper<1> w1 = foo<2>().make();
  62   // CHECK: no viable conversion from 'wrapper<2>' to 'wrapper<1>'
  63
  64   wrapper<1> w2 = foo<-3>().make();
  65   // CHECK: no viable conversion from 'wrapper<-3>' to 'wrapper<1>'
  66
  67   template <int x>
  68   wrapper<x> make();
  69
  70   wrapper<1> w3 = make<4>();
  71   // CHECK: no viable conversion from 'wrapper<4>' to 'wrapper<1>'
  72
  73   template <int x>
  74   wrapper<-x> makeNegative();
  75
  76   wrapper<1> w4 = makeNegative<5>();
  77   // CHECK: no viable conversion from 'wrapper<-5>' to 'wrapper<1>'
  78
  79   wrapper<1> w5 = makeNegative<-6>();
  80   // CHECK: no viable conversion from 'wrapper<6>' to 'wrapper<1>'
  81 }