1 // RUN: rm -rf %t 2 // RUN: not %clang_cc1 -x objective-c++ -fmodules -fimplicit-module-maps -fno-modules-error-recovery -fmodules-cache-path=%t -I %S/Inputs %s -std=c++14 -ast-dump-lookups 2>/dev/null | FileCheck %s --check-prefix=CHECK-GLOBAL 3 // RUN: not %clang_cc1 -x objective-c++ -fmodules -fimplicit-module-maps -fno-modules-error-recovery -fmodules-cache-path=%t -I %S/Inputs %s -std=c++14 -ast-dump-lookups -ast-dump-filter N 2>/dev/null | FileCheck %s --check-prefix=CHECK-NAMESPACE-N 4 // RUN: not %clang_cc1 -x objective-c++ -fmodules -fimplicit-module-maps -fno-modules-error-recovery -fmodules-cache-path=%t -I %S/Inputs %s -std=c++14 -ast-dump -ast-dump-filter SomeTemplate 2>/dev/null | FileCheck %s --check-prefix=CHECK-DUMP 5 // RUN: %clang_cc1 -x objective-c++ -fmodules -fimplicit-module-maps -fno-modules-error-recovery -fmodules-cache-path=%t -I %S/Inputs %s -verify -std=c++14 6 // RUN: %clang_cc1 -x objective-c++ -fmodules -fimplicit-module-maps -fno-modules-error-recovery -fmodules-cache-path=%t -I %S/Inputs %s -verify -std=c++14 -DEARLY_IMPORT 7 8 #ifdef EARLY_IMPORT 9 #include "cxx-templates-textual.h" 10 #endif 11 12 @import cxx_templates_a; 13 @import cxx_templates_b; 14 @import cxx_templates_c; 15 @import cxx_templates_d; 16 @import cxx_templates_common; 17 18 template<typename, char> struct Tmpl_T_C {}; 19 template<typename, int, int> struct Tmpl_T_I_I {}; 20 21 template<typename A, typename B, A> struct Tmpl_T_T_A {}; 22 template<typename A, typename B, B> struct Tmpl_T_T_B {}; 23 24 template<int> struct UseInt {}; 25 26 void g() { 27 f(0); 28 f<double>(1.0); 29 f<int>(); 30 f(); // expected-error {{no matching function}} 31 // expected-note@Inputs/cxx-templates-a.h:3 {{couldn't infer template argument}} 32 // expected-note@Inputs/cxx-templates-a.h:4 {{requires 1 argument}} 33 34 N::f(0); 35 N::f<double>(1.0); 36 N::f<int>(); 37 N::f(); // expected-error {{no matching function}} 38 // expected-note@Inputs/cxx-templates-b.h:6 {{couldn't infer template argument}} 39 // expected-note@Inputs/cxx-templates-b.h:7 {{requires single argument}} 40 41 template_param_kinds_1<0>(); // ok, from cxx-templates-a.h 42 template_param_kinds_1<int>(); // ok, from cxx-templates-b.h 43 44 template_param_kinds_2<Tmpl_T_C>(); // expected-error {{no matching function}} 45 // expected-note@Inputs/cxx-templates-a.h:11 {{invalid explicitly-specified argument}} 46 // expected-note@Inputs/cxx-templates-b.h:11 {{invalid explicitly-specified argument}} 47 48 template_param_kinds_2<Tmpl_T_I_I>(); // expected-error {{ambiguous}} 49 // expected-note@Inputs/cxx-templates-a.h:11 {{candidate}} 50 // expected-note@Inputs/cxx-templates-b.h:11 {{candidate}} 51 52 // FIXME: This should be valid, but we incorrectly match the template template 53 // argument against both template template parameters. 54 template_param_kinds_3<Tmpl_T_T_A>(); // expected-error {{ambiguous}} 55 // expected-note@Inputs/cxx-templates-a.h:12 {{candidate}} 56 // expected-note@Inputs/cxx-templates-b.h:12 {{candidate}} 57 template_param_kinds_3<Tmpl_T_T_B>(); // expected-error {{ambiguous}} 58 // expected-note@Inputs/cxx-templates-a.h:12 {{candidate}} 59 // expected-note@Inputs/cxx-templates-b.h:12 {{candidate}} 60 61 // Trigger the instantiation of a template in 'a' that uses a type defined in 62 // 'common'. That type is not visible here. 63 PerformDelayedLookup(defined_in_common); 64 65 // Likewise, but via a default argument. 66 PerformDelayedLookupInDefaultArgument(defined_in_common); 67 68 // Trigger the instantiation of a template in 'b' that uses a type defined in 69 // 'b_impl'. That type is not visible here. 70 UseDefinedInBImpl<int>(); 71 72 // Trigger the instantiation of a template in 'a' that uses a type defined in 73 // 'b_impl', via a template defined in 'b'. Since the type is visible from 74 // within 'b', the instantiation succeeds. 75 UseDefinedInBImplIndirectly(defined_in_b_impl); 76 77 // Trigger the instantiation of a template in 'a' that uses a type defined in 78 // 'b_impl'. That type is not visible here, nor in 'a'. This fails; there is 79 // no reason why DefinedInBImpl should be visible here. 80 // 81 // We turn off error recovery for modules in this test (so we don't get an 82 // implicit import of cxx_templates_b_impl), and that results in us producing 83 // a big spew of errors here. 84 // 85 // expected-error@Inputs/cxx-templates-a.h:19 {{definition of 'DefinedInBImpl' must be imported}} 86 // expected-note@Inputs/cxx-templates-b-impl.h:1 +{{definition is here}} 87 // expected-error@Inputs/cxx-templates-a.h:19 +{{}} 88 // expected-error@Inputs/cxx-templates-a.h:20 +{{}} 89 PerformDelayedLookup(defined_in_b_impl); // expected-note {{in instantiation of}} 90 91 merge_templates_a = merge_templates_b; // ok, same type 92 93 using T = decltype(enum_a_from_a); 94 using T = decltype(enum_b_from_b); 95 T e = true ? enum_a_from_a : enum_b_from_b; 96 97 UseRedeclaredEnum<int>(UseInt<1>()); 98 // FIXME: Reintroduce this once we merge function template specializations. 99 //static_assert(UseRedeclaredEnumA == UseRedeclaredEnumB, ""); 100 //static_assert(UseRedeclaredEnumA == UseRedeclaredEnum<int>, ""); 101 //static_assert(UseRedeclaredEnumB == UseRedeclaredEnum<int>, ""); 102 static_assert(enum_c_from_a == enum_c_from_b, ""); 103 CommonTemplate<int> cti; 104 CommonTemplate<int>::E eee = CommonTemplate<int>::c; 105 106 TemplateInstantiationVisibility<char[1]> tiv1; 107 TemplateInstantiationVisibility<char[2]> tiv2; 108 TemplateInstantiationVisibility<char[3]> tiv3; // expected-error 5{{must be imported from module 'cxx_templates_b_impl'}} 109 // expected-note (at) cxx-templates-b-impl.h:10 3{{explicit specialization declared here}} 110 // expected-note (at) cxx-templates-b-impl.h:10 2{{previous definition is here}} 111 TemplateInstantiationVisibility<char[4]> tiv4; 112 113 int &p = WithPartialSpecializationUse().f(); 114 int &q = WithExplicitSpecializationUse().inner_template<int>(); 115 int *r = PartiallyInstantiatePartialSpec<int*>::bar(); 116 117 (void)&WithImplicitSpecialMembers<int>::n; 118 119 MergeClassTemplateSpecializations_string s; 120 121 extern TestInjectedClassName::A *use_a; 122 extern TestInjectedClassName::C *use_c; 123 TestInjectedClassName::UseD(); 124 } 125 126 static_assert(Outer<int>::Inner<int>::f() == 1, ""); 127 static_assert(Outer<int>::Inner<int>::g() == 2, ""); 128 129 static_assert(MergeTemplateDefinitions<int>::f() == 1, ""); 130 static_assert(MergeTemplateDefinitions<int>::g() == 2, ""); 131 132 RedeclaredAsFriend<int> raf1; 133 RedeclareTemplateAsFriend<double> rtaf; 134 RedeclaredAsFriend<double> raf2; 135 136 MergeSpecializations<int*>::partially_specialized_in_a spec_in_a_1; 137 MergeSpecializations<int&>::partially_specialized_in_b spec_in_b_1; 138 MergeSpecializations<int[]>::partially_specialized_in_c spec_in_c_1; 139 MergeSpecializations<char>::explicitly_specialized_in_a spec_in_a_2; 140 MergeSpecializations<double>::explicitly_specialized_in_b spec_in_b_2; 141 MergeSpecializations<bool>::explicitly_specialized_in_c spec_in_c_2; 142 143 MergeAnonUnionMember<> maum_main; 144 typedef DontWalkPreviousDeclAfterMerging<int> dwpdam_typedef_2; 145 dwpdam_typedef::type dwpdam_typedef_use; 146 DontWalkPreviousDeclAfterMerging<int>::Inner::type dwpdam; 147 148 using AliasTemplateMergingTest = WithAliasTemplate<int>::X<char>; 149 150 int AnonymousDeclsMergingTest(WithAnonymousDecls<int> WAD, WithAnonymousDecls<char> WADC) { 151 return InstantiateWithAnonymousDeclsA(WAD) + 152 InstantiateWithAnonymousDeclsB(WAD) + 153 InstantiateWithAnonymousDeclsB2(WADC) + 154 InstantiateWithAnonymousDeclsD(WADC); 155 } 156 157 @import cxx_templates_common; 158 159 typedef SomeTemplate<int*> SomeTemplateIntPtr; 160 typedef SomeTemplate<int&> SomeTemplateIntRef; 161 SomeTemplate<char*> some_template_char_ptr; 162 SomeTemplate<char&> some_template_char_ref; 163 164 void testImplicitSpecialMembers(SomeTemplate<char[1]> &a, 165 const SomeTemplate<char[1]> &b, 166 SomeTemplate<char[2]> &c, 167 const SomeTemplate<char[2]> &d) { 168 a = b; 169 c = d; 170 } 171 172 bool testFriendInClassTemplate(Std::WithFriend<int> wfi) { 173 return wfi != wfi; 174 } 175 176 namespace hidden_specializations { 177 // expected-note (at) cxx-templates-unimported.h:* 1+{{here}} 178 void test() { 179 // For functions, uses that would trigger instantiations of definitions are 180 // not allowed. 181 fn<void>(); // ok 182 fn<char>(); // ok 183 fn<int>(); // expected-error 1+{{explicit specialization of 'fn<int>' must be imported}} 184 cls<void>::nested_fn(); // expected-error 1+{{explicit specialization of 'nested_fn' must be imported}} 185 cls<void>::nested_fn_t<int>(); // expected-error 1+{{explicit specialization of 'nested_fn_t' must be imported}} 186 cls<void>::nested_fn_t<char>(); // expected-error 1+{{explicit specialization of 'nested_fn_t' must be imported}} 187 188 // For classes, uses that would trigger instantiations of definitions are 189 // not allowed. 190 cls<void> *k0; // ok 191 cls<char> *k1; // ok 192 cls<int> *k2; // ok 193 cls<int*> *k3; // ok 194 cls<void>::nested_cls *nk1; // ok 195 cls<void>::nested_cls_t<int> *nk2; // ok 196 cls<void>::nested_cls_t<char> *nk3; // ok 197 cls<int> uk1; // expected-error 1+{{explicit specialization of 'cls<int>' must be imported}} expected-error 1+{{definition of}} 198 cls<int*> uk3; // expected-error 1+{{partial specialization of 'cls<type-parameter-0-0 *>' must be imported}} expected-error 1+{{definition of}} 199 cls<char*> uk4; // expected-error 1+{{partial specialization of 'cls<type-parameter-0-0 *>' must be imported}} expected-error 1+{{definition of}} 200 cls<void>::nested_cls unk1; // expected-error 1+{{explicit specialization of 'nested_cls' must be imported}} expected-error 1+{{definition of}} 201 cls<void>::nested_cls_t<int> unk2; // expected-error 1+{{explicit specialization of 'nested_cls_t' must be imported}} expected-error 1+{{definition of}} 202 cls<void>::nested_cls_t<char> unk3; // expected-error 1+{{explicit specialization of 'nested_cls_t' must be imported}} 203 204 // For enums, uses that would trigger instantiations of definitions are not 205 // allowed. 206 cls<void>::nested_enum e; // ok 207 (void)cls<void>::nested_enum::e; // expected-error 1+{{definition of 'nested_enum' must be imported}} expected-error 1+{{declaration of 'e'}} 208 209 // For variable template specializations, no uses are allowed because 210 // specializations can change the type. 211 (void)sizeof(var<void>); // ok 212 (void)sizeof(var<char>); // ok 213 (void)sizeof(var<int>); // expected-error 1+{{explicit specialization of 'var<int>' must be imported}} 214 (void)sizeof(var<int*>); // expected-error 1+{{partial specialization of 'var<type-parameter-0-0 *>' must be imported}} 215 (void)sizeof(var<char*>); // expected-error 1+{{partial specialization of 'var<type-parameter-0-0 *>' must be imported}} 216 (void)sizeof(cls<void>::nested_var); // ok 217 (void)cls<void>::nested_var; // expected-error 1+{{explicit specialization of 'nested_var' must be imported}} 218 (void)sizeof(cls<void>::nested_var_t<int>); // expected-error 1+{{explicit specialization of 'nested_var_t' must be imported}} 219 (void)sizeof(cls<void>::nested_var_t<char>); // expected-error 1+{{explicit specialization of 'nested_var_t' must be imported}} 220 } 221 222 void cls<int>::nested_fn() {} // expected-error 1+{{explicit specialization of 'cls<int>' must be imported}} expected-error 1+{{definition of}} 223 struct cls<int>::nested_cls {}; // expected-error 1+{{explicit specialization of 'cls<int>' must be imported}} expected-error 1+{{definition of}} 224 int cls<int>::nested_var; // expected-error 1+{{explicit specialization of 'cls<int>' must be imported}} expected-error 1+{{definition of}} 225 enum cls<int>::nested_enum : int {}; // expected-error 1+{{explicit specialization of 'cls<int>' must be imported}} expected-error 1+{{definition of}} 226 227 template<typename T> void cls<T*>::nested_fn() {} // expected-error 1+{{partial specialization of 'cls<type-parameter-0-0 *>' must be imported}} 228 template<typename T> struct cls<T*>::nested_cls {}; // expected-error 1+{{partial specialization of 'cls<type-parameter-0-0 *>' must be imported}} 229 template<typename T> int cls<T*>::nested_var; // expected-error 1+{{partial specialization of 'cls<type-parameter-0-0 *>' must be imported}} 230 template<typename T> enum cls<T*>::nested_enum : int {}; // expected-error 1+{{partial specialization of 'cls<type-parameter-0-0 *>' must be imported}} 231 } 232 233 namespace Std { 234 void g(); // expected-error {{functions that differ only in their return type cannot be overloaded}} 235 // expected-note (at) cxx-templates-common.h:21 {{previous}} 236 } 237 238 // CHECK-GLOBAL: DeclarationName 'f' 239 // CHECK-GLOBAL-NEXT: |-FunctionTemplate {{.*}} 'f' 240 // CHECK-GLOBAL-NEXT: |-FunctionTemplate {{.*}} 'f' 241 // CHECK-GLOBAL-NEXT: |-FunctionTemplate {{.*}} 'f' 242 // CHECK-GLOBAL-NEXT: `-FunctionTemplate {{.*}} 'f' 243 244 // CHECK-NAMESPACE-N: DeclarationName 'f' 245 // CHECK-NAMESPACE-N-NEXT: |-FunctionTemplate {{.*}} 'f' 246 // CHECK-NAMESPACE-N-NEXT: |-FunctionTemplate {{.*}} 'f' 247 // CHECK-NAMESPACE-N-NEXT: |-FunctionTemplate {{.*}} 'f' 248 // CHECK-NAMESPACE-N-NEXT: `-FunctionTemplate {{.*}} 'f' 249 250 // CHECK-DUMP: ClassTemplateDecl {{.*}} <{{.*[/\\]}}cxx-templates-common.h:1:1, {{.*}}> col:{{.*}} in cxx_templates_common SomeTemplate 251 // CHECK-DUMP: ClassTemplateSpecializationDecl {{.*}} prev {{.*}} SomeTemplate 252 // CHECK-DUMP-NEXT: TemplateArgument type 'char [1]' 253 // CHECK-DUMP: ClassTemplateSpecializationDecl {{.*}} SomeTemplate definition 254 // CHECK-DUMP-NEXT: TemplateArgument type 'char [1]' 255 // CHECK-DUMP: ClassTemplateSpecializationDecl {{.*}} prev {{.*}} SomeTemplate 256 // CHECK-DUMP-NEXT: TemplateArgument type 'char [2]' 257 // CHECK-DUMP: ClassTemplateSpecializationDecl {{.*}} SomeTemplate definition 258 // CHECK-DUMP-NEXT: TemplateArgument type 'char [2]' 259
