1 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++14 -Wundefined-func-template %s 2 3 template <class T> struct C1 { 4 static char s_var_1; // expected-note{{forward declaration of template entity is here}} 5 static char s_var_2; // expected-note{{forward declaration of template entity is here}} 6 static void s_func_1(); // expected-note{{forward declaration of template entity is here}} 7 static void s_func_2(); // expected-note{{forward declaration of template entity is here}} 8 void meth_1(); // expected-note2{{forward declaration of template entity is here}} 9 void meth_2(); 10 template <class T1> static char s_tvar_2; // expected-note{{forward declaration of template entity is here}} 11 template <class T1> static void s_tfunc_2(); // expected-note{{forward declaration of template entity is here}} 12 template<typename T1> struct C2 { 13 static char s_var_2; // expected-note{{forward declaration of template entity is here}} 14 static void s_func_2(); // expected-note{{forward declaration of template entity is here}} 15 void meth_2(); // expected-note{{forward declaration of template entity is here}} 16 template <class T2> static char s_tvar_2; // expected-note{{forward declaration of template entity is here}} 17 template <class T2> void tmeth_2(); // expected-note{{forward declaration of template entity is here}} 18 }; 19 }; 20 21 extern template char C1<int>::s_var_2; 22 extern template void C1<int>::s_func_2(); 23 extern template void C1<int>::meth_2(); 24 extern template char C1<int>::s_tvar_2<char>; 25 extern template void C1<int>::s_tfunc_2<char>(); 26 extern template void C1<int>::C2<long>::s_var_2; 27 extern template void C1<int>::C2<long>::s_func_2(); 28 extern template void C1<int>::C2<long>::meth_2(); 29 extern template char C1<int>::C2<long>::s_tvar_2<char>; 30 extern template void C1<int>::C2<long>::tmeth_2<char>(); 31 32 char func_01() { 33 return C1<int>::s_var_2; 34 } 35 36 char func_02() { 37 return C1<int>::s_var_1; // expected-warning{{instantiation of variable 'C1<int>::s_var_1' required here, but no definition is available}} 38 // expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::s_var_1' is explicitly instantiated in another translation unit}} 39 } 40 41 char func_03() { 42 return C1<char>::s_var_2; // expected-warning{{instantiation of variable 'C1<char>::s_var_2' required here, but no definition is available}} 43 // expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<char>::s_var_2' is explicitly instantiated in another translation unit}} 44 } 45 46 void func_04() { 47 C1<int>::s_func_1(); // expected-warning{{instantiation of function 'C1<int>::s_func_1' required here, but no definition is available}} 48 // expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::s_func_1' is explicitly instantiated in another translation unit}} 49 } 50 51 void func_05() { 52 C1<int>::s_func_2(); 53 } 54 55 void func_06() { 56 C1<char>::s_func_2(); // expected-warning{{instantiation of function 'C1<char>::s_func_2' required here, but no definition is available}} 57 // expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<char>::s_func_2' is explicitly instantiated in another translation unit}} 58 } 59 60 void func_07(C1<int> *x) { 61 x->meth_1(); // expected-warning{{instantiation of function 'C1<int>::meth_1' required here, but no definition is available}} 62 // expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::meth_1' is explicitly instantiated in another translation unit}} 63 } 64 65 void func_08(C1<int> *x) { 66 x->meth_2(); 67 } 68 69 void func_09(C1<char> *x) { 70 x->meth_1(); // expected-warning{{instantiation of function 'C1<char>::meth_1' required here, but no definition is available}} 71 // expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<char>::meth_1' is explicitly instantiated in another translation unit}} 72 } 73 74 char func_10() { 75 return C1<int>::s_tvar_2<char>; 76 } 77 78 char func_11() { 79 return C1<int>::s_tvar_2<long>; // expected-warning{{instantiation of variable 'C1<int>::s_tvar_2<long>' required here, but no definition is available}} 80 // expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::s_tvar_2<long>' is explicitly instantiated in another translation unit}} 81 } 82 83 void func_12() { 84 C1<int>::s_tfunc_2<char>(); 85 } 86 87 void func_13() { 88 C1<int>::s_tfunc_2<long>(); // expected-warning{{instantiation of function 'C1<int>::s_tfunc_2<long>' required here, but no definition is available}} 89 // expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::s_tfunc_2<long>' is explicitly instantiated in another translation unit}} 90 } 91 92 char func_14() { 93 return C1<int>::C2<long>::s_var_2; 94 } 95 96 char func_15() { 97 return C1<int>::C2<char>::s_var_2; //expected-warning {{instantiation of variable 'C1<int>::C2<char>::s_var_2' required here, but no definition is available}} 98 // expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::C2<char>::s_var_2' is explicitly instantiated in another translation unit}} 99 } 100 101 void func_16() { 102 C1<int>::C2<long>::s_func_2(); 103 } 104 105 void func_17() { 106 C1<int>::C2<char>::s_func_2(); // expected-warning{{instantiation of function 'C1<int>::C2<char>::s_func_2' required here, but no definition is available}} 107 // expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::C2<char>::s_func_2' is explicitly instantiated in another translation unit}} 108 } 109 110 void func_18(C1<int>::C2<long> *x) { 111 x->meth_2(); 112 } 113 114 void func_19(C1<int>::C2<char> *x) { 115 x->meth_2(); // expected-warning{{instantiation of function 'C1<int>::C2<char>::meth_2' required here, but no definition is available}} 116 // expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::C2<char>::meth_2' is explicitly instantiated in another translation unit}} 117 } 118 119 char func_20() { 120 return C1<int>::C2<long>::s_tvar_2<char>; 121 } 122 123 char func_21() { 124 return C1<int>::C2<long>::s_tvar_2<long>; // expected-warning{{instantiation of variable 'C1<int>::C2<long>::s_tvar_2<long>' required here, but no definition is available}} 125 // expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::C2<long>::s_tvar_2<long>' is explicitly instantiated in another translation unit}} 126 } 127 128 void func_22(C1<int>::C2<long> *x) { 129 x->tmeth_2<char>(); 130 } 131 132 void func_23(C1<int>::C2<long> *x) { 133 x->tmeth_2<int>(); // expected-warning{{instantiation of function 'C1<int>::C2<long>::tmeth_2<int>' required here, but no definition is available}} 134 // expected-note@-1{{add an explicit instantiation declaration to suppress this warning if 'C1<int>::C2<long>::tmeth_2<int>' is explicitly instantiated in another translation unit}} 135 } 136 137 int main() { 138 return 0; 139 } 140
