1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 | // No PCH: // RUN: %clang_cc1 -pedantic -std=c++1y -include %s -include %s -verify %s -DNONPCH // RUN: %clang_cc1 -pedantic -std=c++1y -include %s -include %s -verify %s -DNONPCH -DERROR // // With PCH: // RUN: %clang_cc1 -pedantic -std=c++1y -emit-pch %s -o %t.a -DHEADER1 // RUN: %clang_cc1 -pedantic -std=c++1y -include-pch %t.a -emit-pch %s -o %t.b -DHEADER2 // RUN: %clang_cc1 -pedantic -std=c++1y -include-pch %t.b -verify %s -DHEADERUSE #ifndef ERROR // expected-no-diagnostics #endif #ifdef NONPCH #if !defined(HEADER1) #define HEADER1 #undef HEADER2 #undef HEADERUSE #elif !defined(HEADER2) #define HEADER2 #undef HEADERUSE #else #define HEADERUSE #undef HEADER1 #undef HEADER2 #endif #endif // *** HEADER1: First header file #if defined(HEADER1) && !defined(HEADER2) && !defined(HEADERUSE) template<typename T> T var0a = T(); template<typename T> extern T var0b; namespace join { template<typename T> T va = T(100); template<typename T> extern T vb; namespace diff_types { #ifdef ERROR template<typename T> extern float err0; template<typename T> extern T err1; #endif template<typename T> extern T def; } } namespace spec { template<typename T> constexpr T va = T(10); template<> constexpr float va<float> = 1.5; template constexpr int va<int>; template<typename T> T vb = T(); template<> constexpr float vb<float> = 1.5; template<typename T> T vc = T(); template<typename T> constexpr T vd = T(10); template<typename T> T* vd<T*> = new T(); } namespace spec_join1 { template<typename T> T va = T(10); template<> extern float va<float>; extern template int va<int>; template<typename T> T vb = T(10); template<> extern float vb<float>; template<typename T> T vc = T(10); template<typename T> T vd = T(10); template<typename T> extern T* vd<T*>; } #endif // *** HEADER2: Second header file -- including HEADER1 #if defined(HEADER2) && !defined(HEADERUSE) namespace join { template<typename T> extern T va; template<> constexpr float va<float> = 2.5; template<typename T> T vb = T(100); namespace diff_types { #ifdef ERROR template<typename T> extern T err0; // expected-error {{redeclaration of 'err0' with a different type: 'T' vs 'float'}} // expected-note@42 {{previous declaration is here}} template<typename T> extern float err1; // expected-error {{redeclaration of 'err1' with a different type: 'float' vs 'T'}} // expected-note@43 {{previous declaration is here}} #endif template<typename T> extern T def; } } namespace spec_join1 { template<typename T> extern T va; template<> float va<float> = 1.5; extern template int va<int>; template<> float vb<float> = 1.5; template int vb<int>; template<> float vc<float> = 1.5; template int vc<int>; template<typename T> extern T vd; template<typename T> T* vd<T*> = new T(); } #endif // *** HEADERUSE: File using both header files -- including HEADER2 #ifdef HEADERUSE template int var0a<int>; float fvara = var0a<float>; template<typename T> extern T var0a; template<typename T> T var0b = T(); template int var0b<int>; float fvarb = var0b<float>; namespace join { template const int va<const int>; template<> const int va<int> = 50; static_assert(va<float> == 2.5, ""); static_assert(va<int> == 50, ""); template<> constexpr float vb<float> = 2.5; template const int vb<const int>; static_assert(vb<float> == 2.5, ""); static_assert(vb<const int> == 100, ""); namespace diff_types { template<typename T> T def = T(); } } namespace spec { static_assert(va<float> == 1.5, ""); static_assert(va<int> == 10, ""); template<typename T> T* vb<T*> = new T(); int* intpb = vb<int*>; static_assert(vb<float> == 1.5, ""); template<typename T> T* vc<T*> = new T(); template<> constexpr float vc<float> = 1.5; int* intpc = vc<int*>; static_assert(vc<float> == 1.5, ""); char* intpd = vd<char*>; } namespace spec_join1 { template int va<int>; int a = va<int>; template<typename T> extern T vb; int b = vb<int>; int* intpb = vd<int*>; } #endif |