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150
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1 // Test this without pch.
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2 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fexceptions -include %S/cxx-templates.h -verify %s
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3 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fexceptions -include %S/cxx-templates.h %s -emit-llvm -o - -DNO_ERRORS | FileCheck %s
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4
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5 // Test with pch.
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6 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fexceptions -x c++-header -emit-pch -o %t %S/cxx-templates.h
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7 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fexceptions -include-pch %t -verify %s
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8 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fexceptions -include-pch %t %s -emit-llvm -o - -error-on-deserialized-decl doNotDeserialize -DNO_ERRORS | FileCheck %s
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9
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10 // Test with modules.
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11 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fexceptions -fmodules -x c++-header -emit-pch -o %t %S/cxx-templates.h
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12 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fexceptions -fmodules -include-pch %t -verify %s
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13 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fexceptions -fmodules -include-pch %t %s -emit-llvm -o - -error-on-deserialized-decl doNotDeserialize -DNO_ERRORS -fmodules-ignore-macro=NO_ERRORS | FileCheck %s
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14
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15 // Test with pch and delayed template parsing.
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16 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fdelayed-template-parsing -fexceptions -x c++-header -emit-pch -o %t %S/cxx-templates.h
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17 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fdelayed-template-parsing -fexceptions -include-pch %t -verify %s
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18 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fdelayed-template-parsing -fexceptions -include-pch %t %s -emit-llvm -o - -DNO_ERRORS | FileCheck %s
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19
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207
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20 // Test with pch and template instantiation in the pch.
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21 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fexceptions -fpch-instantiate-templates -x c++-header -emit-pch -o %t %S/cxx-templates.h
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22 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fexceptions -include-pch %t -verify %s
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23 // RUN: %clang_cc1 -std=c++17 -triple %itanium_abi_triple -fcxx-exceptions -fexceptions -include-pch %t %s -emit-llvm -o - -DNO_ERRORS | FileCheck %s
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24
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150
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25 // CHECK: define weak_odr {{.*}}void @_ZN2S4IiE1mEv
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26 // CHECK: define linkonce_odr {{.*}}void @_ZN2S3IiE1mEv
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27
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28 struct A {
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29 typedef int type;
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30 static void my_f();
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31 template <typename T>
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32 static T my_templf(T x) { return x; }
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33 };
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34
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35 void test(const int (&a6)[17]) {
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36 int x = templ_f<int, 5>(3);
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37
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38 S<char, float>::templ();
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39 S<int, char>::partial();
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40 S<int, float>::explicit_special();
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41
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42 Dep<A>::Ty ty;
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43 Dep<A> a;
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44 a.f();
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45
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46 S3<int> s3;
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47 s3.m();
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48
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49 TS5 ts(0);
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50
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51 S6<const int[17]>::t2 b6 = a6;
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52 }
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53
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54 template struct S4<int>;
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55
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56 S7<int[5]> s7_5;
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57
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58 namespace ZeroLengthExplicitTemplateArgs {
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59 template void f<X>(X*);
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60 }
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61
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62 // This used to overwrite memory and crash.
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63 namespace Test1 {
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64 struct StringHasher {
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65 template<typename T, char Converter(T)> static inline unsigned createHash(const T*, unsigned) {
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66 return 0;
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67 }
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68 };
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69
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70 struct CaseFoldingHash {
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71 static inline char foldCase(char) {
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72 return 0;
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73 }
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74
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75 static unsigned hash(const char* data, unsigned length) {
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76 return StringHasher::createHash<char, foldCase>(data, length);
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77 }
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78 };
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79 }
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80
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81 template< typename D >
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82 Foo< D >& Foo< D >::operator=( const Foo& other )
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83 {
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84 return *this;
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85 }
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86
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87 namespace TestNestedExpansion {
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88 struct Int {
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89 Int(int);
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90 friend Int operator+(Int, Int);
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91 };
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92 Int &g(Int, int, double);
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93 Int &test = NestedExpansion<char, char, char>().f(0, 1, 2, Int(3), 4, 5.0);
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94 }
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95
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96 namespace rdar13135282 {
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97 void test() {
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98 __mt_alloc<> mt = __mt_alloc<>();
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99 }
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100 }
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101
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102 void CallDependentSpecializedFunc(DependentSpecializedFuncClass<int> &x) {
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103 DependentSpecializedFunc(x);
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104 }
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105
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106 namespace cyclic_module_load {
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107 extern std::valarray<int> x;
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108 std::valarray<int> y(x);
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109 }
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110
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111 #ifndef NO_ERRORS
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112 // expected-error@cxx-templates.h:305 {{incomplete}}
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113 template int local_extern::f<int[]>(); // expected-note {{in instantiation of}}
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114 #endif
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115 template int local_extern::g<int[]>();
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116
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117 namespace MemberSpecializationLocation {
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118 #ifndef NO_ERRORS
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119 // expected-note@cxx-templates.h:* {{previous}}
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120 template<> float A<int>::n; // expected-error {{redeclaration of 'n' with a different type}}
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121 #endif
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122 int k = A<int>::n;
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123 }
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124
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125 // https://bugs.llvm.org/show_bug.cgi?id=34728
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126 namespace PR34728 {
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127 int test() {
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128 // Verify with several TemplateParmDecl kinds, using PCH (incl. modules).
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129 int z1 = func1(/*ignored*/2.718);
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130 int z2 = func2(/*ignored*/3.142);
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131 int tmp3 = 30;
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132 Container<int> c = func3(tmp3);
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133 int z3 = c.item;
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134
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135 // Return value is meaningless. Just "use" all these values to avoid
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136 // warning about unused vars / values.
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137 return z1 + z2 + z3;
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138 }
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139 } // end namespace PR34728
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140
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141 namespace ClassScopeExplicitSpecializations {
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142 // FIXME: It's unclear these warnings (and the behavior they're describing)
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143 // are desirable. These explicit instantiations could meaningfully
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144 // instantiate the explicit specializations defined in the primary template.
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145 template int A<3>::f<0>() const; // expected-warning {{has no effect}}
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146 template int A<3>::f<1>() const;
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147 template int A<4>::f<0>() const; // expected-warning {{has no effect}}
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148 template int A<4>::f<1>() const;
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149 // expected-note@cxx-templates.h:403 2{{here}}
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150
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151 static_assert(A<0>().f<0>() == 4, "");
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152 static_assert(A<0>().f<1>() == 5, "");
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153 static_assert(A<0>().f<2>() == 3, "");
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154 static_assert(A<1>().f<0>() == 2, "");
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155 static_assert(A<1>().f<1>() == 1, "");
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156 static_assert(A<1>().f<2>() == 1, "");
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157 static_assert(A<2>().f<0>() == 2, "");
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158 static_assert(A<2>().f<1>() == 1, "");
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159 static_assert(A<3>().f<0>() == 2, "");
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160 static_assert(A<3>().f<1>() == 1, "");
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161 static_assert(A<4>().f<0>() == 2, "");
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162 static_assert(A<4>().f<1>() == 1, "");
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163 }
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164
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165 namespace DependentMemberExpr {
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166 #ifndef NO_ERRORS
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167 // This used to mark 'f' invalid without producing any diagnostic. That's a
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168 // little hard to detect, but we can make sure that constexpr evaluation
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169 // fails when it should.
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170 static_assert(A<int>().f() == 1); // expected-error {{static_assert failed}}
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171 #endif
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172 }
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173
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174 namespace DependentTemplateName {
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175 struct HasMember {
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176 template <class T> struct Member;
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177 };
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178
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179 void test() {
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180 getWithIdentifier<HasMember>();
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181 }
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182 }
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207
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183
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184 namespace ClassTemplateCycle {
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185 extern T t;
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186 int k = M;
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187 }
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