llvm-project/clang/test/Modules/cxx-templates.cpp

137 lines
6.3 KiB
C++

// RUN: rm -rf %t
// RUN: not %clang_cc1 -x objective-c++ -fmodules -fmodules-cache-path=%t -I %S/Inputs %s -std=c++11 -ast-dump -ast-dump-lookups | FileCheck %s --check-prefix=CHECK-GLOBAL
// RUN: not %clang_cc1 -x objective-c++ -fmodules -fmodules-cache-path=%t -I %S/Inputs %s -std=c++11 -ast-dump -ast-dump-lookups -ast-dump-filter N | FileCheck %s --check-prefix=CHECK-NAMESPACE-N
// RUN: not %clang_cc1 -x objective-c++ -fmodules -fmodules-cache-path=%t -I %S/Inputs %s -std=c++11 -ast-dump | FileCheck %s --check-prefix=CHECK-DUMP
// RUN: %clang_cc1 -x objective-c++ -fmodules -fmodules-cache-path=%t -I %S/Inputs %s -verify -std=c++11
@import cxx_templates_a;
@import cxx_templates_b;
@import cxx_templates_c;
@import cxx_templates_common;
template<typename, char> struct Tmpl_T_C {};
template<typename, int, int> struct Tmpl_T_I_I {};
template<typename A, typename B, A> struct Tmpl_T_T_A {};
template<typename A, typename B, B> struct Tmpl_T_T_B {};
template<int> struct UseInt {};
void g() {
f(0);
f<double>(1.0);
f<int>();
f(); // expected-error {{no matching function}}
// expected-note@Inputs/cxx-templates-b.h:3 {{couldn't infer template argument}}
// expected-note@Inputs/cxx-templates-b.h:4 {{requires single argument}}
N::f(0);
N::f<double>(1.0);
N::f<int>();
N::f(); // expected-error {{no matching function}}
// expected-note@Inputs/cxx-templates-b.h:6 {{couldn't infer template argument}}
// expected-note@Inputs/cxx-templates-b.h:7 {{requires single argument 't'}}
template_param_kinds_1<0>(); // ok, from cxx-templates-a.h
template_param_kinds_1<int>(); // ok, from cxx-templates-b.h
template_param_kinds_2<Tmpl_T_C>(); // expected-error {{no matching function}}
// expected-note@Inputs/cxx-templates-a.h:11 {{invalid explicitly-specified argument}}
// expected-note@Inputs/cxx-templates-b.h:11 {{invalid explicitly-specified argument}}
template_param_kinds_2<Tmpl_T_I_I>(); // expected-error {{ambiguous}}
// expected-note@Inputs/cxx-templates-a.h:11 {{candidate}}
// expected-note@Inputs/cxx-templates-b.h:11 {{candidate}}
// FIXME: This should be valid, but we incorrectly match the template template
// argument against both template template parameters.
template_param_kinds_3<Tmpl_T_T_A>(); // expected-error {{ambiguous}}
// expected-note@Inputs/cxx-templates-a.h:12 {{candidate}}
// expected-note@Inputs/cxx-templates-b.h:12 {{candidate}}
template_param_kinds_3<Tmpl_T_T_B>(); // expected-error {{ambiguous}}
// expected-note@Inputs/cxx-templates-a.h:12 {{candidate}}
// expected-note@Inputs/cxx-templates-b.h:12 {{candidate}}
// Trigger the instantiation of a template in 'a' that uses a type defined in
// 'common'. That type is not visible here.
PerformDelayedLookup(defined_in_common);
// Likewise, but via a default argument.
PerformDelayedLookupInDefaultArgument(defined_in_common);
// Trigger the instantiation of a template in 'b' that uses a type defined in
// 'b_impl'. That type is not visible here.
UseDefinedInBImpl<int>();
// Trigger the instantiation of a template in 'a' that uses a type defined in
// 'b_impl', via a template defined in 'b'. Since the type is visible from
// within 'b', the instantiation succeeds.
UseDefinedInBImplIndirectly(defined_in_b_impl);
// Trigger the instantiation of a template in 'a' that uses a type defined in
// 'b_impl'. That type is not visible here, nor in 'a'. This fails; there is
// no reason why DefinedInBImpl should be visible here.
// expected-error@Inputs/cxx-templates-a.h:19 {{definition of 'DefinedInBImpl' must be imported}}
// expected-note@Inputs/cxx-templates-b-impl.h:1 {{definition is here}}
PerformDelayedLookup(defined_in_b_impl); // expected-note {{in instantiation of}}
merge_templates_a = merge_templates_b; // ok, same type
using T = decltype(enum_a_from_a);
using T = decltype(enum_b_from_b);
T e = true ? enum_a_from_a : enum_b_from_b;
UseRedeclaredEnum<int>(UseInt<1>());
// FIXME: Reintroduce this once we merge function template specializations.
//static_assert(UseRedeclaredEnumA == UseRedeclaredEnumB, "");
//static_assert(UseRedeclaredEnumA == UseRedeclaredEnum<int>, "");
//static_assert(UseRedeclaredEnumB == UseRedeclaredEnum<int>, "");
static_assert(enum_c_from_a == enum_c_from_b, "");
CommonTemplate<int> cti;
CommonTemplate<int>::E eee = CommonTemplate<int>::c;
}
RedeclaredAsFriend<int> raf1;
RedeclareTemplateAsFriend<double> rtaf;
RedeclaredAsFriend<double> raf2;
MergeSpecializations<int*>::partially_specialized_in_a spec_in_a_1;
MergeSpecializations<int&>::partially_specialized_in_b spec_in_b_1;
MergeSpecializations<int[]>::partially_specialized_in_c spec_in_c_1;
MergeSpecializations<char>::explicitly_specialized_in_a spec_in_a_2;
MergeSpecializations<double>::explicitly_specialized_in_b spec_in_b_2;
MergeSpecializations<bool>::explicitly_specialized_in_c spec_in_c_2;
@import cxx_templates_common;
typedef SomeTemplate<int*> SomeTemplateIntPtr;
typedef SomeTemplate<int&> SomeTemplateIntRef;
SomeTemplate<char*> some_template_char_ptr;
SomeTemplate<char&> some_template_char_ref;
void testImplicitSpecialMembers(SomeTemplate<char[1]> &a,
const SomeTemplate<char[1]> &b,
SomeTemplate<char[2]> &c,
const SomeTemplate<char[2]> &d) {
a = b;
c = d;
}
// CHECK-GLOBAL: DeclarationName 'f'
// CHECK-GLOBAL-NEXT: |-FunctionTemplate {{.*}} 'f'
// CHECK-GLOBAL-NEXT: `-FunctionTemplate {{.*}} 'f'
// CHECK-NAMESPACE-N: DeclarationName 'f'
// CHECK-NAMESPACE-N-NEXT: |-FunctionTemplate {{.*}} 'f'
// CHECK-NAMESPACE-N-NEXT: `-FunctionTemplate {{.*}} 'f'
// CHECK-DUMP: ClassTemplateDecl {{.*}} <{{.*}}/cxx-templates-common.h:1:1, {{.*}}> in cxx_templates_common SomeTemplate
// CHECK-DUMP: ClassTemplateSpecializationDecl {{.*}} prev [[CHAR2:[^ ]*]] {{.*}} SomeTemplate
// CHECK-DUMP-NEXT: TemplateArgument type 'char [2]'
// CHECK-DUMP: ClassTemplateSpecializationDecl [[CHAR2]] {{.*}} SomeTemplate definition
// CHECK-DUMP-NEXT: TemplateArgument type 'char [2]'
// CHECK-DUMP: ClassTemplateSpecializationDecl {{.*}} prev [[CHAR1:[^ ]*]] {{.*}} SomeTemplate
// CHECK-DUMP-NEXT: TemplateArgument type 'char [1]'
// CHECK-DUMP: ClassTemplateSpecializationDecl [[CHAR1]] {{.*}} SomeTemplate definition
// CHECK-DUMP-NEXT: TemplateArgument type 'char [1]'