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152
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1 /* PR c++/93810 - missing -Wmismatched-tags and -Wredundant-tags on a typedef
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2 of an implicit class template specialization
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3 { dg-do compile }
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4 { dg-options "-Wall -Wmismatched-tags" }
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5 { dg-require-effective-target c++11 } */
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6
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7 class A; // { dg-message "declared as 'class'" }
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8 typedef A A0;
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9 typedef class A A0;
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10 typedef struct A A0; // { dg-warning "-Wmismatched-tags" }
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11
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12 template <int> struct B; // { dg-message "declared as 'struct'" }
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13 typedef B<0> B0;
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14 typedef class B<0> B0; // { dg-warning "-Wmismatched-tags" }
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15 typedef struct B<0> B0;
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16
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17
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18 // Exercise member types of templates with non-type arguments.
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19 template <int> struct CN; // { dg-message "declared as 'struct'" }
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20
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21 template <int N>
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22 struct X_CNp1 {
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23 typedef CN<N + 1> CNp1;
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24 };
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25
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26 template <int N>
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27 struct X_class_CNp1 {
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28 typedef class CN<N + 1> CNp1; // { dg-warning "-Wmismatched-tags" }
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29 };
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30
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31 template <int N>
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32 struct X_struct_CNp1 {
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33 typedef struct CN<N + 1> CNp1;
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34 };
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35
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36
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37 // Exercise partial specialization of templates with member types.
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38 template <class> class CT1;
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39 template <class T> struct CT1<T*> { };
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40 template <class T> struct CT1<T**> { };
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41 template <class T> class CT1<T***> { };
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42
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43 template <class> struct CT2;
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44 template <class T> struct CT2<T*> {
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45 // Expect class-key to match the primary.
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46 CT1<T> ct1_0;
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47 class CT1<T> ct1_1;
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48 struct CT1<T> ct1_2; // { dg-warning "-Wmismatched-tags" }
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49
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50 // Expect class-key to match the CT1<T*> partial specialization.
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51 CT1<T*> ct1p1_0;
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52 class CT1<T*> ct1p1_1; // { dg-warning "-Wmismatched-tags" }
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53 struct CT1<T*> ct1p1_2;
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54
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55 // Expect class-key to match the CT1<T**> partial specialization.
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56 CT1<T**> ct1p2_0;
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57 class CT1<T**> ct1p2_1; // { dg-warning "-Wmismatched-tags" }
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58 struct CT1<T**> ct1p2_2;
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59
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60 // Expect class-key to match the CT1<T***> partial specialization.
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61 CT1<T***> ct1p3_0;
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62 class CT1<T***> ct1p3_1;
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63 struct CT1<T***> ct1p3_2; // { dg-warning "-Wmismatched-tags" }
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64
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65 // Expect class-key to still match the CT1<T***> partial specialization.
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66 CT1<T****> ct1p4_0;
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67 class CT1<T****> ct1p4_1;
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68 struct CT1<T****> ct1p4_2; // { dg-warning "-Wmismatched-tags" }
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69 };
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70
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71 // Exercise many partial specializations (since the class-key for each
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72 // must be tracked separately from the others).
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73 template <class> class D;
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74 template <class T> struct D<T*>;
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75 template <class T> class D<T&>;
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76 template <class T> struct D<const T*>;
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77 template <class T> class D<const T&>;
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78 template <class T> struct D<volatile T*>;
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79 template <class T> class D<volatile T&>;
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80 template <class T> struct D<const volatile T*>;
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81 template <class T> class D<const volatile T&>;
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82
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83 typedef class D<int*> DIP; // { dg-warning "-Wmismatched-tags" }
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84 typedef struct D<int*> DIP;
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85 typedef class D<int*> DIP; // { dg-warning "-Wmismatched-tags" }
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86 typedef struct D<int*> DIP;
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87
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88 typedef class D<int&> DIR;
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89 typedef struct D<int&> DIR; // { dg-warning "-Wmismatched-tags" }
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90 typedef class D<int&> DIR;
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91
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92
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93 typedef struct D<const int*> DCIP;
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94 typedef class D<const int*> DCIP; // { dg-warning "-Wmismatched-tags" }
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95 typedef struct D<const int*> DCIP;
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96
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97 typedef struct D<const int&> DCIR; // { dg-warning "-Wmismatched-tags" }
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98 typedef class D<const int&> DCIR;
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99 typedef struct D<const int&> DCIR; // { dg-warning "-Wmismatched-tags" }
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100
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101
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102 typedef struct D<volatile int*> DVIP;
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103 typedef class D<volatile int*> DVIP; // { dg-warning "-Wmismatched-tags" }
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104 typedef struct D<volatile int*> DVIP;
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105
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106 typedef struct D<volatile int&> DVIR; // { dg-warning "-Wmismatched-tags" }
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107 typedef class D<volatile int&> DVIR;
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108 typedef struct D<volatile int&> DVIR; // { dg-warning "-Wmismatched-tags" }
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109
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110
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111 typedef struct D<const volatile int*> DCVIP;
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112 typedef class D<const volatile int*> DCVIP; // { dg-warning "-Wmismatched-tags" }
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113 typedef struct D<const volatile int*> DCVIP;
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114
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115 typedef struct D<const volatile int&> DCVIR; // { dg-warning "-Wmismatched-tags" }
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116 typedef class D<const volatile int&> DCVIR;
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117 typedef struct D<const volatile int&> DCVIR; // { dg-warning "-Wmismatched-tags" }
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