[clang] Implement P0692R1 from C++20 (access checking on specializations and instantiations)

This patch implements paper P0692R1 from the C++20 standard. Disable usual access checking rules to template argument names in a declaration of partial specializations, explicit instantiation or explicit specialization (C++20 13.7.5/10, 13.9.1/6).
Fixes: https://llvm.org/PR37424
This patch also implements option *A* from this paper P0692R1 from the C++20 standard.
This patch follows the @rsmith suggestion from D78404.

Reviewed By: krisb

Differential Revision: https://reviews.llvm.org/D92024
This commit is contained in:
Alex Orlov 2021-08-10 19:20:50 +04:00
parent e260e10c4a
commit 638dcea010
9 changed files with 839 additions and 46 deletions

View File

@ -3091,6 +3091,12 @@ void Parser::ParseDeclarationSpecifiers(DeclSpec &DS,
return true;
};
// Turn off usual access checking for template specializations and
// instantiations.
bool IsTemplateSpecOrInst =
(TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization);
switch (Tok.getKind()) {
default:
DoneWithDeclSpec:
@ -3261,6 +3267,12 @@ void Parser::ParseDeclarationSpecifiers(DeclSpec &DS,
isConstructorDeclarator(/*Unqualified*/ false))
goto DoneWithDeclSpec;
// C++20 [temp.spec] 13.9/6.
// This disables the access checking rules for function template explicit
// instantiation and explicit specialization:
// - `return type`.
SuppressAccessChecks SAC(*this, IsTemplateSpecOrInst);
ParsedType TypeRep =
Actions.getTypeName(*Next.getIdentifierInfo(), Next.getLocation(),
getCurScope(), &SS, false, false, nullptr,
@ -3268,6 +3280,9 @@ void Parser::ParseDeclarationSpecifiers(DeclSpec &DS,
/*WantNontrivialTypeSourceInfo=*/true,
isClassTemplateDeductionContext(DSContext));
if (IsTemplateSpecOrInst)
SAC.done();
// If the referenced identifier is not a type, then this declspec is
// erroneous: We already checked about that it has no type specifier, and
// C++ doesn't have implicit int. Diagnose it as a typo w.r.t. to the
@ -3377,10 +3392,24 @@ void Parser::ParseDeclarationSpecifiers(DeclSpec &DS,
// In C++, check to see if this is a scope specifier like foo::bar::, if
// so handle it as such. This is important for ctor parsing.
if (getLangOpts().CPlusPlus) {
if (TryAnnotateCXXScopeToken(EnteringContext)) {
// C++20 [temp.spec] 13.9/6.
// This disables the access checking rules for function template
// explicit instantiation and explicit specialization:
// - `return type`.
SuppressAccessChecks SAC(*this, IsTemplateSpecOrInst);
const bool Success = TryAnnotateCXXScopeToken(EnteringContext);
if (IsTemplateSpecOrInst)
SAC.done();
if (Success) {
if (IsTemplateSpecOrInst)
SAC.redelay();
DS.SetTypeSpecError();
goto DoneWithDeclSpec;
}
if (!Tok.is(tok::identifier))
continue;
}

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@ -1474,19 +1474,15 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind,
return;
}
// C++03 [temp.explicit] 14.7.2/8:
// The usual access checking rules do not apply to names used to specify
// explicit instantiations.
//
// As an extension we do not perform access checking on the names used to
// specify explicit specializations either. This is important to allow
// specializing traits classes for private types.
//
// Note that we don't suppress if this turns out to be an elaborated
// type specifier.
bool shouldDelayDiagsInTag =
(TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization);
// C++20 [temp.class.spec] 13.7.5/10
// The usual access checking rules do not apply to non-dependent names
// used to specify template arguments of the simple-template-id of the
// partial specialization.
// C++20 [temp.spec] 13.9/6:
// The usual access checking rules do not apply to names in a declaration
// of an explicit instantiation or explicit specialization...
const bool shouldDelayDiagsInTag =
(TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate);
SuppressAccessChecks diagsFromTag(*this, shouldDelayDiagsInTag);
ParsedAttributesWithRange attrs(AttrFactory);
@ -1834,14 +1830,6 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind,
}
}
// If this is an elaborated type specifier, and we delayed
// diagnostics before, just merge them into the current pool.
if (shouldDelayDiagsInTag) {
diagsFromTag.done();
if (TUK == Sema::TUK_Reference)
diagsFromTag.redelay();
}
if (!Name && !TemplateId && (DS.getTypeSpecType() == DeclSpec::TST_error ||
TUK != Sema::TUK_Definition)) {
if (DS.getTypeSpecType() != DeclSpec::TST_error) {
@ -2018,6 +2006,16 @@ void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind,
}
}
// If this is an elaborated type specifier in function template,
// and we delayed diagnostics before,
// just merge them into the current pool.
if (shouldDelayDiagsInTag) {
diagsFromTag.done();
if (TUK == Sema::TUK_Reference &&
TemplateInfo.Kind == ParsedTemplateInfo::Template)
diagsFromTag.redelay();
}
// If there is a body, parse it and inform the actions module.
if (TUK == Sema::TUK_Definition) {
assert(Tok.is(tok::l_brace) ||
@ -2713,9 +2711,22 @@ Parser::ParseCXXClassMemberDeclaration(AccessSpecifier AS,
if (MalformedTypeSpec)
DS.SetTypeSpecError();
// Turn off usual access checking for templates explicit specialization
// and instantiation.
// C++20 [temp.spec] 13.9/6.
// This disables the access checking rules for member function template
// explicit instantiation and explicit specialization.
bool IsTemplateSpecOrInst =
(TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization);
SuppressAccessChecks diagsFromTag(*this, IsTemplateSpecOrInst);
ParseDeclarationSpecifiers(DS, TemplateInfo, AS, DeclSpecContext::DSC_class,
&CommonLateParsedAttrs);
if (IsTemplateSpecOrInst)
diagsFromTag.done();
// Turn off colon protection that was set for declspec.
X.restore();
@ -2784,6 +2795,11 @@ Parser::ParseCXXClassMemberDeclaration(AccessSpecifier AS,
ExprResult TrailingRequiresClause;
bool ExpectSemi = true;
// C++20 [temp.spec] 13.9/6.
// This disables the access checking rules for member function template
// explicit instantiation and explicit specialization.
SuppressAccessChecks SAC(*this, IsTemplateSpecOrInst);
// Parse the first declarator.
if (ParseCXXMemberDeclaratorBeforeInitializer(
DeclaratorInfo, VS, BitfieldSize, LateParsedAttrs)) {
@ -2791,6 +2807,9 @@ Parser::ParseCXXClassMemberDeclaration(AccessSpecifier AS,
return nullptr;
}
if (IsTemplateSpecOrInst)
SAC.done();
// Check for a member function definition.
if (BitfieldSize.isUnset()) {
// MSVC permits pure specifier on inline functions defined at class scope.

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@ -248,7 +248,27 @@ Decl *Parser::ParseSingleDeclarationAfterTemplate(
ParsingDeclarator DeclaratorInfo(*this, DS, (DeclaratorContext)Context);
if (TemplateInfo.TemplateParams)
DeclaratorInfo.setTemplateParameterLists(*TemplateInfo.TemplateParams);
// Turn off usual access checking for template specializations and
// instantiations.
// C++20 [temp.spec] 13.9/6.
// This disables the access checking rules for function template explicit
// instantiation and explicit specialization:
// - parameter-list;
// - template-argument-list;
// - noexcept-specifier;
// - dynamic-exception-specifications (deprecated in C++11, removed since
// C++17).
bool IsTemplateSpecOrInst =
(TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization);
SuppressAccessChecks SAC(*this, IsTemplateSpecOrInst);
ParseDeclarator(DeclaratorInfo);
if (IsTemplateSpecOrInst)
SAC.done();
// Error parsing the declarator?
if (!DeclaratorInfo.hasName()) {
// If so, skip until the semi-colon or a }.

View File

@ -272,7 +272,7 @@ namespace test7 {
// Return types, parameters and default arguments to friend functions.
namespace test8 {
class A {
typedef int I; // expected-note 4 {{declared private here}}
typedef int I; // expected-note 6 {{declared private here}}
static const I x = 0; // expected-note {{implicitly declared private here}}
friend I f(I i);
template<typename T> friend I g(I i);
@ -289,7 +289,16 @@ namespace test8 {
template<typename T> A::I g2(A::I i) { // expected-error 2 {{is a private member of}}
T t;
}
template A::I g2<A::I>(A::I i);
template <> A::I g2<char>(A::I i) { return 0; } // OK
template A::I g2<A::I>(A::I i); // OK
template <> A::I g2<char>(A::I i); // OK
template <> A::I g2<A::I *>(A::I i); // OK
template A::I g2<unsigned>(A::I i); // OK
template int g2<A::I **>(int i); // OK
template A::I g2<A::I ***>(A::I i); // OK
template <typename T> A::I g3(A::I i) { return 0; } // expected-error 2 {{is a private member of}}
template <> int g3<A::I>(int i); // OK
}
// PR6885

View File

@ -934,12 +934,12 @@ namespace dr182 { // dr182: yes
template <class T> void C<T>::g() {}
class A {
class B {}; // expected-note {{here}}
class B {};
void f();
};
template void C<A::B>::f();
template <> void C<A::B>::g(); // expected-error {{private}}
template <> void C<A::B>::g();
void A::f() {
C<B> cb;

View File

@ -0,0 +1,247 @@
// RUN: %clang_cc1 -std=c++17 -fsyntax-only -verify %s
// C++20 [temp.spec] 13.9/6:
// The usual access checking rules do not apply to names in a declaration
// of an explicit instantiation or explicit specialization, with the
// exception of names appearing in a function body, default argument,
// base-clause, member-specification, enumerator-list, or static data member
// or variable template initializer.
// [Note : In particular, the template arguments and names used in the
// function declarator(including parameter types, return types and exception
// specifications) may be private types or objects that would normally not be
// accessible. — end note]
class A {
// expected-note@+1 17{{implicitly declared private here}}
template <typename T> class B {};
// expected-note@+1 3{{implicitly declared private here}}
static constexpr int num1 = 42;
protected:
// expected-note@+1 13{{declared protected here}}
class C {};
// expected-note@+1 2{{declared protected here}}
static constexpr int num2 = 43;
static int num4;
public:
template <typename T> class D {};
static constexpr int num3 = 44;
};
int A::num4 = 44;
class E : public A {
// Declarations
// expected-error@+1 {{is a private member of}}
template <typename T = A::B<int>> void func1();
template <typename T = A::C> void func2();
template <typename T = class A::D<int>> void func3();
// expected-error@+1 {{is a private member of}}
template <typename T> A::B<int> func4();
// expected-error@+1 {{is a private member of}}
template <typename T> A::B<T> func5();
template <typename T> class A::C func6();
template <typename T> class A::D<int> func7();
// expected-error@+1 2{{is a private member of}}
template <typename T> void func8(class A::B<T>, int x = A::num1);
template <typename T> void func9(A::C, A::D<T>, int = A::num3);
// Specializations inside class declaration
template <> void func1<A::B<char>>() {}
template <> void func2<class A::D<char>>() {
} template <> void func3<class A::C>() {
}
template <> class A::B<int> func4<A::B<char>>() { return {}; } template <> A::B<A::D<int>> func5<A::D<int>>() {
return {};
}
template <> class A::C func6<A::C>() { return {}; } template <> A::D<int> func7<char>() {
return {};
}
template <> void func8<char>(class A::B<char>, int) {}
template <> void func9<A::B<char>>(A::C, A::D<A::B<char>>, int) {}
// FIXME: Instantiations inside class declaration.
// don't work correctly.
};
// Definitions
template <typename T> void E::func1() {}
template <typename T> void E::func2() {}
template <typename T> void E::func3() {}
// expected-error@+1 {{is a private member of}}
template <typename T> A::B<int> E::func4() { return {}; }
// expected-error@+1 {{is a private member of}}
template <typename T> A::B<T> E::func5() { return {}; }
template <typename T> A::C E::func6() { return {}; }
template <typename T> A::D<int> E::func7() { return {}; }
// expected-error@+1 {{is a private member of}}
template <typename T> void E::func8(A::B<T>, int) {}
template <typename T> void E::func9(A::C, A::D<T>, int) {}
// Specializations
template <> void E::func1<A::B<int>>() {}
template <> void E::func2<class A::C>() {}
template <> void E::func3<class A::D<int>>() {
} template <> class A::B<int> E::func4<A::B<int>>() {
return {};
} template <> A::B<A::C> E::func5<A::C>() {
return {};
}
template <> class A::C E::func6<A::D<int>>() { return {}; } template <> A::D<int> E::func7<int>() {
return {};
}
template <> void E::func8<int>(class A::B<int>, int) {}
template <> void E::func9<A::C>(A::C, A::D<A::C>, int) {}
// Instantiations
template <> void E::func1<A::B<int>>();
template <> void E::func2<class A::C>();
template <> void E::func3<class A::D<int>>();
template <> class A::B<int> E::func4<A::B<int>>();
template <> A::B<A::C> E::func5<A::C>();
template <> class A::C E::func6<A::D<int>>();
template <> A::D<int> E::func7<int>();
template <> void E::func8<int>(class A::B<int>, int);
template <> void E::func9<A::C>(A::C, A::D<A::C>, int);
//----------------------------------------------------------//
// forward declarations
// expected-error@+1 {{is a protected member of}}
template <typename T> class A::C func1();
// expected-error@+1 {{is a private member of}}
template <typename T> A::B<T> func2();
template <typename T> A::D<T> func3();
// expected-error@+1 {{is a private member of}}
template <typename T> class A::B<int> func4();
template <typename T> void func5();
// expected-error@+1 {{is a private member of}}
template <int x = A::num1> void func6();
// expected-error@+1 {{is a protected member of}}
template <int x = A::num2> void func7();
// expected-error@+1 {{is a protected member of}}
template <typename T> void func8(int x = sizeof(A::C));
// expected-error@+1 {{is a private member of}}
template <typename T> void func9(int x = A::num1);
// expected-error@+2 {{is a private member of}}
// expected-error@+1 {{is a protected member of}}
template <typename T> void func10(class A::B<T>, int x = A::num2);
// expected-error@+1 {{is a protected member of}}
template <typename T> void func11(class A::C, A::D<T>, int = A::num3);
template <typename T> void func12();
template <int x> void func13();
template <typename T, int x> void func14();
template <template <typename> typename T> void func15();
// expected-error@+1 {{is a protected member of}}
template <typename T = A::C> void func16();
// expected-error@+1 {{is a private member of}}
template <typename T = A::B<int>> void func17();
// expected-error@+1 {{is a protected member of}}
template <typename T> auto func18() -> A::C;
template <typename T> T func19();
//----------------------------------------------------------//
// definitions
// expected-error@+1 2{{is a protected member of}}
template <typename T> A::C func1() { A::C x; }
// expected-error@+2 {{is a private member of}}
// expected-error@+1 {{is a protected member of}}
template <typename T> A::B<T> func2() { A::D<A::C> x; }
template <typename T> A::D<T> func3() { A::D<int> x; }
// expected-error@+2 2{{is a private member of}}
// expected-error@+1 {{is a protected member of}}
template <typename T> class A::B<int> func4() { A::B<A::C> x; }
template <typename T>
void func5() {
// expected-error@+2 {{is a private member of}}
// expected-error@+1 {{is a protected member of}}
A::B<A::D<A::C>> x;
// expected-error@+1 {{is a private member of}}
A::B<int> x2;
}
template <typename T> void func8(int x) {}
template <typename T> void func9(int x) {}
// expected-error@+1 {{is a private member of}}
template <typename T> void func10(A::B<T>, int x) {}
// expected-error@+1 {{is a protected member of}}
template <typename T> void func11(A::C, A::D<T>, int) {}
template <typename T> void func12() {}
template <int x> void func13() {}
template <typename T, int x> void func14() {}
template <template <typename> typename T> void func15() {}
template <typename T> void func16() {}
template <typename T> void func17() {}
// expected-error@+1 {{is a protected member of}}
template <typename T> auto func18() -> A::C {
// expected-error@+1 {{is a protected member of}}
return A::C{};
}
template <typename T> T func19() {
return T{};
}
//----------------------------------------------------------//
// explicit specializations
template <> A::C func1<A::C>();
template <> A::B<A::C> func2<A::C>();
template <> A::D<A::C> func3<A::C>();
template <> class A::B<int> func4<A::C>();
template <> void func5<A::C>();
template <> void func5<A::B<int>>();
template <> void func5<A::D<A::C>>();
template <> void func5<int>();
template <> void func8<A::C>(int x);
template <> void func9<decltype(A::num1)>(int);
template <> void func10<A::D<int>>(A::B<A::D<int>>, int);
template <> void func11<A::C>(A::C, A::D<A::C>, int);
template <> void func12<class A::B<char>>() {
} template <> void func13<A::num1>() {
}
template <> void func14<A::B<int>, A::num2>() {}
template <> void func15<A::D>() {}
template <> void func16<class A::B<char>>() {
} template <> void func17<A::B<class A::C>>() {
}
template <> auto func18<int>() -> class A::C;
template <> A::B<int> func19<class A::B<int>>();
//----------------------------------------------------------//
// explicit instantiations
template void func10<A::C>(A::B<A::C>, decltype(A::num1));
template void func11<A::B<int>>(A::C, A::D<A::B<int>>, decltype(A::num2));
template void func12<A::C>();
template void func13<A::num2>();
template void func13<A::num3>();
template void func14<A::C, A::num1>();
template void func15<A::B>();
template void func17();
template auto func18<char>() -> A::C;
template class A::C func19<A::C>();
//----------------------------------------------------------//
// Other cases
template <int *x> class StealClass {
friend int stealFunc() { return *x; }
};
template class StealClass<&A::num4>;
int stealFunc();
int stealFunc2() {
return stealFunc();
}

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@ -0,0 +1,481 @@
// RUN: %clang_cc1 -fsyntax-only -verify %s
// C++20 [temp.class.spec] 13.7.5/10
// The usual access checking rules do not apply to non-dependent names
// used to specify template arguments of the simple-template-id of the
// partial specialization.
//
// C++20 [temp.spec] 13.9/6:
// The usual access checking rules do not apply to names in a declaration
// of an explicit instantiation or explicit specialization...
// TODO: add test cases for `enum`
// class for tests
class TestClass {
public:
class PublicClass {};
template <class T> class TemplatePublicClass {};
using AliasPublicClass = unsigned char;
void publicFunc();
void publicFuncOverloaded();
void publicFuncOverloaded(int);
static void publicStaticFunc();
static void publicStaticFuncOverloaded();
static void publicStaticFuncOverloaded(int);
static constexpr int publicStaticInt = 42;
protected:
// expected-note@+1 8{{declared protected here}}
class ProtectedClass {};
template <class T> class TemplateProtectedClass {};
// expected-note@+1 2{{declared protected here}}
using AliasProtectedClass = const char;
// expected-note@+1 3{{declared protected here}}
void protectedFunc();
void protectedFuncOverloaded();
void protectedFuncOverloaded(int);
// expected-note@+1 2{{declared protected here}}
static void protectedStaticFunc();
// expected-note@+1 2{{declared protected here}}
static void protectedStaticFuncOverloaded();
static void protectedStaticFuncOverloaded(int);
// expected-note@+1 2{{declared protected here}}
static constexpr int protectedStaticInt = 43;
private:
// expected-note@+1 10{{declared private here}}
class PrivateClass {};
// expected-note@+1 {{declared private here}}
template <class T> class TemplatePrivateClass {};
using AliasPrivateClass = char *;
void privateFunc();
void privateFuncOverloaded();
void privateFuncOverloaded(int);
static void privateStaticFunc();
static void privateStaticFuncOverloaded();
static void privateStaticFuncOverloaded(int);
static constexpr int privateStaticInt = 44;
};
void globalFunction() {}
//----------------------------------------------------------//
// template declarations for explicit instantiations
template <typename T> class IT1 {};
template <typename T1, typename T2> class IT2 {};
template <int X> class IT3 {};
template <void (TestClass::*)()> class IT4 {};
template <void (*)()> class IT5 {};
template <typename T> class IT6 {
template <typename NT> class NIT1 {};
};
template <typename T1, typename T2> class IT7 {};
template <void (TestClass::*)(), int X> class IT8 {};
template <typename T, void (*)()> class IT9 {};
// explicit instantiations
// public
template class IT1<TestClass::PublicClass>;
template struct IT1<TestClass::TemplatePublicClass<int>>;
template class IT1<TestClass::AliasPublicClass>;
template struct IT2<TestClass::PublicClass, TestClass::PublicClass>;
template class IT3<TestClass::publicStaticInt>;
template struct IT4<&TestClass::publicFunc>;
template class IT4<&TestClass::publicFuncOverloaded>;
template class IT5<&TestClass::publicStaticFunc>;
template class IT5<&TestClass::publicStaticFuncOverloaded>;
template class IT5<&globalFunction>;
template class IT6<TestClass::PublicClass>::template NIT1<TestClass::PublicClass>;
template class IT7<TestClass::AliasPublicClass, TestClass::PublicClass>;
template struct IT7<TestClass::PublicClass, TestClass::TemplatePublicClass<TestClass::PublicClass>>;
template class IT8<&TestClass::publicFunc, TestClass::publicStaticInt>;
template class IT8<&TestClass::publicFuncOverloaded, TestClass::publicStaticInt>;
template class IT9<TestClass::PublicClass, &TestClass::publicStaticFunc>;
template class IT9<TestClass::PublicClass, &TestClass::publicStaticFuncOverloaded>;
template class IT9<TestClass::PublicClass, &globalFunction>;
// protected
template class IT1<TestClass::ProtectedClass>;
template struct IT1<TestClass::TemplateProtectedClass<int>>;
template class IT1<TestClass::AliasProtectedClass>;
template struct IT2<TestClass::ProtectedClass, TestClass::ProtectedClass>;
template class IT3<TestClass::protectedStaticInt>;
template struct IT4<&TestClass::protectedFunc>;
template class IT4<&TestClass::protectedFuncOverloaded>;
template class IT5<&TestClass::protectedStaticFunc>;
template class IT5<&TestClass::protectedStaticFuncOverloaded>;
template class IT6<TestClass::ProtectedClass>::template NIT1<TestClass::ProtectedClass>;
template class IT7<TestClass::AliasProtectedClass, TestClass::ProtectedClass>;
template struct IT7<TestClass::ProtectedClass, TestClass::TemplateProtectedClass<TestClass::ProtectedClass>>;
template class IT8<&TestClass::protectedFunc, TestClass::protectedStaticInt>;
template class IT8<&TestClass::protectedFuncOverloaded, TestClass::protectedStaticInt>;
template class IT9<TestClass::ProtectedClass, &TestClass::protectedStaticFunc>;
template class IT9<TestClass::ProtectedClass, &TestClass::protectedStaticFuncOverloaded>;
template class IT9<TestClass::ProtectedClass, &globalFunction>;
// private
template class IT1<TestClass::PrivateClass>;
template struct IT1<TestClass::TemplatePrivateClass<int>>;
template class IT1<TestClass::AliasPrivateClass>;
template struct IT2<TestClass::PrivateClass, TestClass::PrivateClass>;
template class IT3<TestClass::privateStaticInt>;
template struct IT4<&TestClass::privateFunc>;
template class IT4<&TestClass::privateFuncOverloaded>;
template class IT5<&TestClass::privateStaticFunc>;
template class IT5<&TestClass::privateStaticFuncOverloaded>;
template class IT6<TestClass::PrivateClass>::template NIT1<TestClass::PrivateClass>;
template class IT7<TestClass::AliasPrivateClass, TestClass::PrivateClass>;
template struct IT7<TestClass::PrivateClass, TestClass::TemplatePrivateClass<TestClass::PrivateClass>>;
template class IT8<&TestClass::privateFunc, TestClass::privateStaticInt>;
template class IT8<&TestClass::privateFuncOverloaded, TestClass::privateStaticInt>;
template class IT9<TestClass::PrivateClass, &TestClass::privateStaticFunc>;
template class IT9<TestClass::PrivateClass, &TestClass::privateStaticFuncOverloaded>;
template class IT9<TestClass::PrivateClass, &globalFunction>;
//----------------------------------------------------------//
// template declarations for full specializations
template <typename T> class CT1 {};
template <typename T1, typename T2> class CT2 {};
template <int X> class CT3 {};
template <void (TestClass::*)()> class CT4 {};
template <void (*)()> class CT5 {};
template <typename T> class CT6 {
template <typename NT> class NCT1 {};
template <typename NT> class NCT2; // forward declaration
};
// full specializations
// public
template <> class CT1<TestClass::PublicClass>;
template <typename T> class CT1<TestClass::TemplatePublicClass<T>>; // not full but let it be here
template <> struct CT1<TestClass::TemplatePublicClass<int>>;
template <> class CT1<TestClass::AliasPublicClass>;
template <> struct CT2<TestClass::PublicClass, TestClass::PublicClass>;
template <> class CT3<TestClass::publicStaticInt>;
template <> struct CT4<&TestClass::publicFunc>;
template <> class CT4<&TestClass::publicFuncOverloaded>;
template <> struct CT5<&TestClass::publicStaticFunc>;
template <> class CT5<&TestClass::publicStaticFuncOverloaded>;
template <> class CT5<&globalFunction>;
template <> template <> class CT6<TestClass::PublicClass>::NCT1<TestClass::PublicClass>;
template <> class CT1<TestClass::PublicClass> final {};
template <typename T> class CT1<TestClass::TemplatePublicClass<T>> {};
template <> class CT1<TestClass::TemplatePublicClass<int>> final {};
template <> class CT1<TestClass::AliasPublicClass> {};
template <> class CT2<TestClass::PublicClass, TestClass::PublicClass> final {};
template <> class CT3<TestClass::publicStaticInt> {};
template <> class CT4<&TestClass::publicFunc> final {};
template <> class CT4<&TestClass::publicFuncOverloaded> {};
template <> class CT5<&TestClass::publicStaticFunc> final {};
template <> class CT5<&TestClass::publicStaticFuncOverloaded> {};
template <> class CT5<&globalFunction> final {};
template <> template <> class CT6<TestClass::PublicClass>::NCT1<TestClass::PublicClass> {};
template <> template <typename NT> class CT6<TestClass::PublicClass>::NCT2 final {}; // declaration
// protected
template <> class CT1<TestClass::ProtectedClass>;
template <typename T> class CT1<TestClass::TemplateProtectedClass<T>>; // not full but let it be here
template <> class CT1<TestClass::TemplateProtectedClass<int>>;
template <> struct CT1<TestClass::AliasProtectedClass>;
template <> class CT2<TestClass::ProtectedClass, TestClass::ProtectedClass>;
template <> struct CT3<TestClass::protectedStaticInt>;
template <> class CT4<&TestClass::protectedFunc>;
template <> struct CT4<&TestClass::protectedFuncOverloaded>;
template <> class CT5<&TestClass::protectedStaticFunc>;
template <> class CT5<&TestClass::protectedStaticFuncOverloaded>;
template <> template <> class CT6<TestClass::ProtectedClass>::NCT1<TestClass::ProtectedClass>;
template <> class CT1<TestClass::ProtectedClass> {};
template <typename T> class CT1<TestClass::TemplateProtectedClass<T>> final {}; // not full but let it be here
template <> class CT1<TestClass::TemplateProtectedClass<int>> {};
template <> class CT1<TestClass::AliasProtectedClass> final {};
template <> class CT2<TestClass::ProtectedClass, TestClass::ProtectedClass> {};
template <> class CT3<TestClass::protectedStaticInt> final {};
template <> class CT4<&TestClass::protectedFunc> {};
template <> class CT4<&TestClass::protectedFuncOverloaded> final {};
template <> class CT5<&TestClass::protectedStaticFunc> {};
template <> class CT5<&TestClass::protectedStaticFuncOverloaded> final {};
template <> template <> class CT6<TestClass::ProtectedClass>::NCT1<TestClass::ProtectedClass> {};
template <> template <typename NT> class CT6<TestClass::ProtectedClass>::NCT2 final {}; // declaration
// private
template <> class CT1<TestClass::PrivateClass>;
template <typename T> class CT1<TestClass::TemplatePrivateClass<T>>; // not full but let it be here
template <> struct CT1<TestClass::TemplatePrivateClass<int>>;
template <> class CT1<TestClass::AliasPrivateClass>;
template <> struct CT2<TestClass::PrivateClass, TestClass::PrivateClass>;
template <> class CT3<TestClass::privateStaticInt>;
template <> struct CT4<&TestClass::privateFunc>;
template <> class CT4<&TestClass::privateFuncOverloaded>;
template <> class CT5<&TestClass::privateStaticFunc>;
template <> class CT5<&TestClass::privateStaticFuncOverloaded>;
template <> template <> class CT6<TestClass::PrivateClass>::NCT1<TestClass::PrivateClass>;
template <> class CT1<TestClass::PrivateClass> final {};
template <typename T> class CT1<TestClass::TemplatePrivateClass<T>> {}; // not full but let it be here
template <> class CT1<TestClass::TemplatePrivateClass<int>> final {};
template <> class CT1<TestClass::AliasPrivateClass> {};
template <> class CT2<TestClass::PrivateClass, TestClass::PrivateClass> final {};
template <> class CT3<TestClass::privateStaticInt> {};
template <> class CT4<&TestClass::privateFunc> final {}; // PR37424
template <> class CT4<&TestClass::privateFuncOverloaded> {}; // PR37424
template <> class CT5<&TestClass::privateStaticFunc> final {};
template <> class CT5<&TestClass::privateStaticFuncOverloaded> {};
template <> template <> class CT6<TestClass::PrivateClass>::NCT1<TestClass::PrivateClass> final {};
template <> template <typename NT> class CT6<TestClass::PrivateClass>::NCT2 {}; // declaration
//----------------------------------------------------------//
// template declarations for full specializations with parents
class P1 {};
template <typename T> class PCT1 {};
template <typename T1, typename T2> class PCT2 {};
template <int X> class PCT3 {};
template <void (TestClass::*)()> class PCT4 {};
template <void (*)()> class PCT5 {};
template <typename T> class PCT6 {
// expected-note@+1 3{{implicitly declared private here}}
template <typename NT> class NPCT1 {};
// expected-note@+1 {{template is declared here}}
template <typename NT> class NPCT2; // forward declaration
};
// full specializations with parents
// protected + public
template <> class PCT1<TestClass::PublicClass> : P1 {};
template <typename T> class PCT1<TestClass::TemplatePublicClass<T>> : PCT2<TestClass::PublicClass, TestClass::PublicClass> {}; // not full but let it be here
template <> struct PCT1<TestClass::TemplatePublicClass<int>> : PCT1<TestClass::AliasPublicClass> {};
template <> class PCT1<TestClass::AliasProtectedClass> : PCT2<TestClass::PublicClass, int> {};
template <> struct PCT2<TestClass::ProtectedClass, TestClass::PublicClass> : PCT3<TestClass::publicStaticInt> {};
template <> class PCT3<TestClass::protectedStaticInt> : PCT4<&TestClass::publicFunc> {};
template <> struct PCT4<&TestClass::protectedFunc> : PCT5<&TestClass::publicStaticFunc> {};
template <> class PCT4<&TestClass::publicFuncOverloaded> : PCT5<&TestClass::publicStaticFuncOverloaded> {};
template <> class PCT5<&TestClass::protectedStaticFunc> : PCT5<&TestClass::publicStaticFuncOverloaded> {};
// expected-error@+1 {{is a private member of}}
template <> class PCT5<&TestClass::protectedStaticFuncOverloaded> : PCT6<TestClass::PublicClass>::NPCT1<TestClass::PublicClass> {};
// expected-error@+2 {{is a protected member of}}
// expected-error@+1 {{is a private member of}}
template <> class PCT5<&globalFunction> : PCT6<TestClass::ProtectedClass>::NPCT1<int> {};
template <> template <typename NT> class PCT6<TestClass::PublicClass>::NPCT2 : P1 {}; // declaration
template <> template <> class PCT6<TestClass::PublicClass>::NPCT1<TestClass::ProtectedClass> : PCT6<TestClass::PublicClass>::template NPCT2<int> {};
// protected + private
template <> class PCT1<TestClass::PrivateClass> : P1 {};
// expected-error@+2 {{is a protected member of}}
// expected-error@+1 {{is a private member of}}
template <typename T> class PCT1<TestClass::TemplatePrivateClass<T>> : PCT2<TestClass::PrivateClass, TestClass::ProtectedClass> {}; // not full but let it be here
// expected-error@+1 {{is a protected member of}}
template <> class PCT1<TestClass::TemplatePrivateClass<int>> : PCT1<TestClass::AliasProtectedClass> {};
// expected-error@+2 {{is a protected member of}}
// expected-error@+1 {{is a private member of}}
template <> class PCT1<TestClass::AliasPrivateClass> : PCT2<TestClass::ProtectedClass, TestClass::PrivateClass> {};
// expected-error@+1 {{is a protected member of}}
template <> class PCT2<TestClass::PrivateClass, TestClass::PrivateClass> : PCT3<TestClass::protectedStaticInt> {};
// expected-error@+1 {{is a protected member of}}
template <> class PCT3<TestClass::privateStaticInt> : PCT4<&TestClass::protectedFunc> {};
// expected-error@+1 {{is a protected member of}}
template <> class PCT4<&TestClass::privateFunc> : PCT5<&TestClass::protectedStaticFunc> {};
// expected-error@+1 {{is a protected member of}}
template <> class PCT4<&TestClass::privateFuncOverloaded> : PCT5<&TestClass::protectedStaticFuncOverloaded> {};
template <> class PCT5<&TestClass::privateStaticFunc> : P1 {};
// expected-error@+2 {{implicit instantiation of undefined template}}
// expected-error@+1 {{is a private member of}}
template <> template <> class PCT6<TestClass::PrivateClass>::NPCT1<TestClass::PrivateClass> : PCT6<TestClass::PrivateClass>::NPCT2<int> {};
// expected-error@+1 3{{is a private member of}}
template <> class PCT5<&TestClass::privateStaticFuncOverloaded> : PCT6<TestClass::PrivateClass>::NPCT1<TestClass::PrivateClass> {};
template <> template <typename NT> class PCT6<TestClass::PrivateClass>::NPCT2 : P1 {}; // declaration
//----------------------------------------------------------//
// template declarations for partial specializations
template <typename T1, typename T2> class CTT1 {};
template <typename T1, typename T2, typename T3> class CTT2 {};
template <typename T, int X> class CTT3 {};
template <typename T, void (TestClass::*)()> class CTT4 {};
template <typename T, void (*)()> class CTT5 {};
template <typename T1, typename T2> class CTT6 {
template <typename NT> class NCT1 {};
template <typename NT> class NCT2; // forward declaration
template <typename NT1, typename NT2> class NCT3 {};
template <typename NT1, typename NT2> class NCT4; // forward declaration
};
// partial specializations
// public
template <typename T> class CTT1<T, TestClass::PublicClass> final {};
template <typename T> class CTT1<T, TestClass::TemplatePublicClass<T>> {};
template <typename T> struct CTT1<T, TestClass::TemplatePublicClass<int>> final {};
template <typename T> class CTT1<T, TestClass::AliasPublicClass> {};
template <typename T> struct CTT2<T, TestClass::PublicClass, TestClass::PublicClass> final {};
template <typename T> struct CTT2<TestClass::PublicClass, T, TestClass::PublicClass> {};
template <typename T> class CTT2<TestClass::PublicClass, TestClass::PublicClass, T> final {};
template <typename T> class CTT3<T, TestClass::publicStaticInt> {};
template <typename T> class CTT4<T, &TestClass::publicFunc> final {};
template <typename T> class CTT4<T, &TestClass::publicFuncOverloaded> {};
template <typename T> class CTT5<T, &TestClass::publicStaticFunc> final {};
template <typename T> class CTT5<T, &TestClass::publicStaticFuncOverloaded> {};
template <typename T> class CTT5<T, &globalFunction> final {};
// expected-error@+1 {{cannot specialize a dependent template}}
template <typename T1> template <typename T2> class CTT6<T1, TestClass::PublicClass>::template NCT1<T2 *> {};
template <typename T1, typename T2> template <typename T3> class CTT6<T1, T2>::NCT1<T3 *> final {};
template <typename T1, typename T2> template <typename T3> class CTT6<T1, T2>::NCT2 {}; // declaration
template <typename T1, typename T2> template <typename T3> class CTT6<T1, T2>::NCT2<T3 *> final {};
template <typename T1, typename T2> template <typename T3> class CTT6<T1, T2>::NCT3<T3, TestClass::PublicClass> {};
// expected-error@+1 {{cannot specialize a dependent template}}
template <typename T1> template <typename T2> class CTT6<T1, TestClass::PublicClass>::template NCT3<T2, TestClass::PublicClass> final {};
template <typename T1, typename T2> template <typename T3, typename T4> class CTT6<T1, T2>::NCT4 {}; // declaration
template <typename T1, typename T2> template <typename T3> class CTT6<T1, T2>::NCT4<T3, TestClass::PublicClass> final {};
template <typename T> class CTT6<TestClass::PublicClass, T> {
template <typename T1, typename T2> class NCT3 {};
template <typename T1, typename T2> class NCT4;
};
template <typename T1> template <typename T2> class CTT6<TestClass::PublicClass, T1>::NCT3<T2, TestClass::PublicClass> {};
template <typename T1> template <typename, typename> class CTT6<TestClass::PublicClass, T1>::NCT4 final {};
template <typename T1> template <typename T2> class CTT6<TestClass::PublicClass, T1>::NCT4<T2, TestClass::PublicClass> {};
// protected
template <typename T> class CTT1<T, TestClass::ProtectedClass> {};
template <typename T> class CTT1<T, TestClass::TemplateProtectedClass<T>> final {};
template <typename T> struct CTT1<T, TestClass::TemplateProtectedClass<int>> {};
template <typename T> class CTT1<T, TestClass::AliasProtectedClass> final {};
template <typename T> struct CTT2<T, TestClass::ProtectedClass, TestClass::ProtectedClass> {};
template <typename T> class CTT2<TestClass::ProtectedClass, T, TestClass::ProtectedClass> final {};
template <typename T> struct CTT2<TestClass::ProtectedClass, TestClass::ProtectedClass, T> {};
template <typename T> class CTT3<T, TestClass::protectedStaticInt> final {};
template <typename T> class CTT4<T, &TestClass::protectedFunc> {};
template <typename T> class CTT4<T, &TestClass::protectedFuncOverloaded> final {};
template <typename T> class CTT5<T, &TestClass::protectedStaticFunc> {};
template <typename T> class CTT5<T, &TestClass::protectedStaticFuncOverloaded> final {};
// expected-error@+1 {{cannot specialize a dependent template}}
template <typename T1> template <typename T2> class CTT6<T1, TestClass::ProtectedClass>::template NCT1<T2 *> {};
template <typename T1, typename T2> template <typename T3> class CTT6<T1, T2>::NCT3<T3, TestClass::ProtectedClass> final {};
// expected-error@+1 {{cannot specialize a dependent template}}
template <typename T1> template <typename T2> class CTT6<T1, TestClass::ProtectedClass>::template NCT3<T2, TestClass::ProtectedClass> {};
template <typename T1, typename T2> template <typename T3> class CTT6<T1, T2>::NCT4<T3, TestClass::ProtectedClass> final {};
template <typename T> class CTT6<TestClass::ProtectedClass, T> {
template <typename T1, typename T2> class NCT3 {};
template <typename T1, typename T2> class NCT4;
};
template <typename T1> template <typename T2> class CTT6<TestClass::ProtectedClass, T1>::NCT3<T2, TestClass::ProtectedClass> final {};
template <typename T1> template <typename, typename> class CTT6<TestClass::ProtectedClass, T1>::NCT4 {};
template <typename T1> template <typename T2> class CTT6<TestClass::ProtectedClass, T1>::NCT4<T2, TestClass::ProtectedClass> final {};
// private
template <typename T> class CTT1<T, TestClass::PrivateClass> final {};
template <typename T> class CTT1<T, TestClass::TemplatePrivateClass<T>> {};
template <typename T> struct CTT1<T, TestClass::TemplatePrivateClass<int>> final {};
template <typename T> class CTT1<T, TestClass::AliasPrivateClass> {};
template <typename T> struct CTT2<T, TestClass::PrivateClass, TestClass::PrivateClass> final {};
template <typename T> class CTT2<TestClass::PrivateClass, T, TestClass::PrivateClass> {};
template <typename T> struct CTT2<TestClass::PrivateClass, TestClass::PrivateClass, T> final {};
template <typename T> class CTT3<T, TestClass::privateStaticInt> {};
template <typename T> class CTT4<T, &TestClass::privateFunc> final {};
template <typename T> class CTT4<T, &TestClass::privateFuncOverloaded> {};
template <typename T> class CTT5<T, &TestClass::privateStaticFunc> final {};
template <typename T> class CTT5<T, &TestClass::privateStaticFuncOverloaded> {};
// expected-error@+1 {{cannot specialize a dependent template}}
template <typename T1> template <typename T2> class CTT6<T1, TestClass::PrivateClass>::template NCT1<T2 *> final {};
template <typename T1, typename T2> template <typename T3> class CTT6<T1, T2>::NCT3<T3, TestClass::PrivateClass> {};
// expected-error@+1 {{cannot specialize a dependent template}}
template <typename T1> template <typename T2> class CTT6<T1, TestClass::PrivateClass>::template NCT3<T2, TestClass::PrivateClass> final {};
template <typename T1, typename T2> template <typename T3> class CTT6<T1, T2>::NCT4<T3, TestClass::PrivateClass> {};
template <typename T> class CTT6<TestClass::PrivateClass, T> {
template <typename T1, typename T2> class NCT3 {};
template <typename T1, typename T2> class NCT4;
};
template <typename T1> template <typename T2> class CTT6<TestClass::PrivateClass, T1>::NCT3<T2, TestClass::PrivateClass> {};
template <typename T1> template <typename, typename> class CTT6<TestClass::PrivateClass, T1>::NCT4 final {};
template <typename T1> template <typename T2> class CTT6<TestClass::PrivateClass, T1>::NCT4<T2, TestClass::PrivateClass> final {};
//----------------------------------------------------------//
// template declarations for partial specializations with parents
template <typename T1, typename T2> class PCTT1 {};
template <typename T1, typename T2, typename T3> class PCTT2 {};
template <typename T, int X> class PCTT3 {};
template <typename T, void (TestClass::*)()> class PCTT4 {};
template <typename T, void (*)()> class PCTT5 {};
template <typename T1, typename T2> class PCTT6 {
template <typename NT> class NCT1 {};
template <typename NT> class NCT2; // forward declaration
template <typename NT1, typename NT2> class NCT3 {};
template <typename NT1, typename NT2> class NCT4; // forward declaration
};
// partial specializations with parents
// protected + public
template <typename T> class PCTT1<T, TestClass::PublicClass> : P1 {};
template <typename T> struct PCTT1<T, TestClass::TemplatePublicClass<T>> final : PCTT2<T, TestClass::PublicClass, TestClass::PublicClass> {}; // not full but let it be here
template <typename T> class PCTT1<T, TestClass::TemplatePublicClass<int>> : PCTT1<T, TestClass::AliasPublicClass> {};
// expected-error@+1 {{is a protected member of}}
template <typename T> class PCTT1<T, TestClass::TemplatePublicClass<TestClass::TemplateProtectedClass<T>>> final : PCTT1<T, TestClass::ProtectedClass> {};
template <typename T> struct PCTT1<T, TestClass::AliasProtectedClass> : PCTT2<T, TestClass::PublicClass, int> {};
template <typename T> class PCTT2<T, TestClass::ProtectedClass, TestClass::PublicClass> final : PCTT3<T, TestClass::publicStaticInt> {};
template <typename T> class PCTT3<T, TestClass::protectedStaticInt> : PCTT4<T, &TestClass::publicFunc> {};
template <typename T> struct PCTT4<T, &TestClass::protectedFunc> final : PCTT5<T, &TestClass::publicStaticFunc> {};
template <typename T> class PCTT4<T, &TestClass::publicFuncOverloaded> : PCTT5<T, &TestClass::publicStaticFuncOverloaded> {};
template <typename T> class PCTT5<T, &TestClass::protectedStaticFunc> final : PCTT5<T, &TestClass::publicStaticFuncOverloaded> {};
template <typename T> class PCTT5<T, &TestClass::protectedStaticFuncOverloaded> : PCTT6<T, TestClass::PublicClass>::template NCT1<TestClass::PublicClass> {};
// expected-error@+1 {{is a protected member of}}
template <typename T> class PCTT5<T, &globalFunction> : PCTT6<T, TestClass::ProtectedClass>::template NCT1<int> {};
// expected-error@+1 {{is a protected member of}}
template <typename T1, typename T2> template <typename T3> class PCTT6<T1, T2>::NCT2 final : PCTT4<T1, &TestClass::protectedFunc> {}; // declaration
template <typename T1, typename T2> template <typename T3> class PCTT6<T1, T2>::NCT2<T3 *> : P1 {};
// expected-error@+2 {{cannot specialize a dependent template}}
// expected-error@+1 {{is a protected member of}}
template <typename T> template <typename NT> class PCTT6<T, TestClass::ProtectedClass>::template NCT1<NT *> : PCTT6<T, TestClass::ProtectedClass>::template NCT2<int> {};
// protected + private
template <typename T> class PCTT1<T, TestClass::PrivateClass> : P1 {};
// expected-error@+2 {{is a protected member of}}
// expected-error@+1 {{is a private member of}}
template <typename T> struct PCTT1<T, TestClass::TemplatePrivateClass<T>> final : PCTT2<T, TestClass::PrivateClass, TestClass::ProtectedClass> {}; // not full but let it be here
// expected-error@+1 {{is a protected member of}}
template <typename T> class PCTT1<T, TestClass::TemplatePrivateClass<int>> : PCTT1<T, TestClass::AliasProtectedClass> {};
// expected-error@+2 {{is a protected member of}}
// expected-error@+1 {{is a private member of}}
template <typename T> struct PCTT1<T, TestClass::AliasPrivateClass> final : PCTT2<T, TestClass::ProtectedClass, TestClass::PrivateClass> {};
// expected-error@+1 {{is a protected member of}}
template <typename T> class PCTT2<T, TestClass::PrivateClass, TestClass::TemplatePrivateClass<T>> : PCTT3<T, TestClass::protectedStaticInt> {};
// expected-error@+1 {{is a protected member of}}
template <typename T> class PCTT3<T, TestClass::privateStaticInt> final : PCTT4<T, &TestClass::protectedFunc> {};
// expected-error@+1 {{is a protected member of}}
template <typename T> struct PCTT4<T, &TestClass::privateFunc> : PCTT5<T, &TestClass::protectedStaticFunc> {};
// expected-error@+1 {{is a protected member of}}
template <typename T> class PCTT4<T, &TestClass::privateFuncOverloaded> final : PCTT5<T, &TestClass::protectedStaticFuncOverloaded> {};
template <typename T> class PCTT5<T, &TestClass::privateStaticFunc> : P1 {};
// expected-error@+2 {{cannot specialize a dependent template}}
// expected-error@+1 {{is a private member of}}
template <typename T> class PCTT6<T, TestClass::PrivateClass>::template PCTT1<TestClass::PrivateClass> : PCTT6<T, TestClass::PrivateClass>::template NCT2<int> {};
// expected-error@+1 {{is a private member of}}
template <typename T> class PCTT5<T, &TestClass::privateStaticFuncOverloaded> final : PCTT6<T, T>::template NCT1<TestClass::PrivateClass> {};
template <typename T> class PCTT6<TestClass::PrivateClass, T> {
template <typename T1, typename T2> class NCT3 final {};
template <typename T1, typename T2> class NCT4;
};
template <typename T1> template <typename, typename> class PCTT6<TestClass::PrivateClass, T1>::NCT4 final {};
// expected-error@+1 2{{is a private member of}}
template <typename T1> template <typename T2> struct PCTT6<TestClass::PrivateClass, T1>::template NCT3<T2, TestClass::TemplatePrivateClass<TestClass::TemplateProtectedClass<TestClass::PublicClass>>> : PCTT6<TestClass::PrivateClass, T1>::NCT4<T2, TestClass::TemplatePrivateClass<int>> {};

View File

@ -1,19 +0,0 @@
// RUN: %clang_cc1 -fsyntax-only -verify %s
// expected-no-diagnostics
class X {
template <typename T> class Y {};
};
class A {
class B {};
class C {};
};
// C++0x [temp.explicit] 14.7.2/11:
// The usual access checking rules do not apply to names used to specify
// explicit instantiations.
template class X::Y<A::B>;
// As an extension, this rule is applied to explicit specializations as well.
template <> class X::Y<A::C> {};

View File

@ -43,7 +43,14 @@ namespace test2 {
Temp(int x) {}
};
template <> class Temp<A::Private> Temp<int>::make() { // expected-error {{'Private' is a private member of 'test2::A'}}
template <> class Temp<A::Private> Temp<int>::make() {
return Temp<A::Public>(0);
}
template <>
class Temp<char> {
static Temp<A::Private> make() { // expected-error {{is a private member}}
return Temp<A::Public>(0);
}
};
}