aorlov updated this revision to Diff 340095.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D92024/new/
https://reviews.llvm.org/D92024
Files:
clang/include/clang/Parse/Parser.h
clang/include/clang/Sema/DelayedDiagnostic.h
clang/lib/Parse/ParseDecl.cpp
clang/lib/Parse/ParseDeclCXX.cpp
clang/lib/Parse/ParseTemplate.cpp
clang/test/CXX/class.access/class.friend/p1.cpp
clang/test/CXX/drs/dr1xx.cpp
clang/test/CXX/temp/temp.spec/func.spec.cpp
clang/test/CXX/temp/temp.spec/part.spec.cpp
clang/test/CXX/temp/temp.spec/temp.explicit/p11.cpp
clang/test/CXX/temp/temp.spec/temp.explicit/p12.cpp
Index: clang/test/CXX/temp/temp.spec/temp.explicit/p12.cpp
===================================================================
--- clang/test/CXX/temp/temp.spec/temp.explicit/p12.cpp
+++ clang/test/CXX/temp/temp.spec/temp.explicit/p12.cpp
@@ -43,7 +43,13 @@
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);
+ }
+ };
}
Index: clang/test/CXX/temp/temp.spec/temp.explicit/p11.cpp
===================================================================
--- clang/test/CXX/temp/temp.spec/temp.explicit/p11.cpp
+++ /dev/null
@@ -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> {};
Index: clang/test/CXX/temp/temp.spec/part.spec.cpp
===================================================================
--- /dev/null
+++ clang/test/CXX/temp/temp.spec/part.spec.cpp
@@ -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>> {};
Index: clang/test/CXX/temp/temp.spec/func.spec.cpp
===================================================================
--- /dev/null
+++ clang/test/CXX/temp/temp.spec/func.spec.cpp
@@ -0,0 +1,237 @@
+// 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. â 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();
+}
Index: clang/test/CXX/drs/dr1xx.cpp
===================================================================
--- clang/test/CXX/drs/dr1xx.cpp
+++ clang/test/CXX/drs/dr1xx.cpp
@@ -934,12 +934,12 @@
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;
Index: clang/test/CXX/class.access/class.friend/p1.cpp
===================================================================
--- clang/test/CXX/class.access/class.friend/p1.cpp
+++ clang/test/CXX/class.access/class.friend/p1.cpp
@@ -272,7 +272,7 @@
// 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 @@
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
Index: clang/lib/Parse/ParseTemplate.cpp
===================================================================
--- clang/lib/Parse/ParseTemplate.cpp
+++ clang/lib/Parse/ParseTemplate.cpp
@@ -258,6 +258,26 @@
return nullptr;
}
+ // Turn off usual access checking for template specializations and
+ // instantiations.
+ // We don't use `SuppressAccessChecks` here
+ // because it suppresses ALL kinds of diagnostics
+ // but we need to retain other kinds.
+ // For instance this marked as unavailable:
+ // class __attribute((unavailable)) UnavailableClass;`
+ //
+ // 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).
+ if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
+ TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization)
+ RemoveDiagnosticsFromPool(sema::DelayedDiagnostic::DDKind::Access);
+
llvm::TimeTraceScope TimeScope("ParseTemplate", [&]() {
return std::string(DeclaratorInfo.getIdentifier() != nullptr
? DeclaratorInfo.getIdentifier()->getName()
@@ -1826,3 +1846,13 @@
AngleBrackets.clear(*this);
return false;
}
+
+/// Remove delayed diagnostics of given kind from the pool to avoid unwanted
+/// diagnostic messages.
+///
+/// Note: Removing doesn't touch parent pools.
+void Parser::RemoveDiagnosticsFromPool(sema::DelayedDiagnostic::DDKind K) {
+ if (sema::DelayedDiagnosticPool *Pool =
+ Actions.DelayedDiagnostics.getCurrentPool())
+ Pool->removeAllOfKind(K);
+}
\ No newline at end of file
Index: clang/lib/Parse/ParseDeclCXX.cpp
===================================================================
--- clang/lib/Parse/ParseDeclCXX.cpp
+++ clang/lib/Parse/ParseDeclCXX.cpp
@@ -1438,19 +1438,15 @@
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);
@@ -1794,14 +1790,6 @@
}
}
- // 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) {
@@ -1978,6 +1966,16 @@
}
}
+ // 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) ||
@@ -2654,6 +2652,19 @@
ParseDeclarationSpecifiers(DS, TemplateInfo, AS, DeclSpecContext::DSC_class,
&CommonLateParsedAttrs);
+ // Turn off usual access checking for templates explicit specialization
+ // and instantiation.
+ auto RemoveAccessChecksDiagnostics = [&TemplateInfo, this]() {
+ if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
+ TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization)
+ RemoveDiagnosticsFromPool(sema::DelayedDiagnostic::DDKind::Access);
+ };
+
+ // C++20 [temp.spec] 13.9/6.
+ // This disables the access checking rules for member function template
+ // explicit instantiation and explicit specialization.
+ RemoveAccessChecksDiagnostics();
+
// Turn off colon protection that was set for declspec.
X.restore();
@@ -2792,6 +2803,11 @@
DS.ClearStorageClassSpecs();
}
+ // C++20 [temp.spec] 13.9/6.
+ // This disables the access checking rules for member function template
+ // explicit instantiation and explicit specialization.
+ RemoveAccessChecksDiagnostics();
+
Decl *FunDecl =
ParseCXXInlineMethodDef(AS, AccessAttrs, DeclaratorInfo, TemplateInfo,
VS, PureSpecLoc);
Index: clang/lib/Parse/ParseDecl.cpp
===================================================================
--- clang/lib/Parse/ParseDecl.cpp
+++ clang/lib/Parse/ParseDecl.cpp
@@ -3071,6 +3071,19 @@
SourceLocation Loc = Tok.getLocation();
+ // Turn off usual access checking for template specializations and
+ // instantiations.
+ // We don't use `SuppressAccessChecks` here
+ // because it suppresses ALL kinds of diagnostics
+ // but we need to retain other kinds.
+ // For instance this marked as unavailable:
+ // class __attribute((unavailable)) UnavailableClass;`
+ auto RemoveAccessCheckingDiagnostics = [&TemplateInfo, this]() {
+ if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
+ TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization)
+ RemoveDiagnosticsFromPool(sema::DelayedDiagnostic::DDKind::Access);
+ };
+
switch (Tok.getKind()) {
default:
DoneWithDeclSpec:
@@ -3248,6 +3261,12 @@
/*WantNontrivialTypeSourceInfo=*/true,
isClassTemplateDeductionContext(DSContext));
+ // C++20 [temp.spec] 13.9/6.
+ // This disables the access checking rules for function template explicit
+ // instantiation and explicit specialization:
+ // - `return type`.
+ RemoveAccessCheckingDiagnostics();
+
// 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
@@ -3361,6 +3380,13 @@
DS.SetTypeSpecError();
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`.
+ RemoveAccessCheckingDiagnostics();
+
if (!Tok.is(tok::identifier))
continue;
}
Index: clang/include/clang/Sema/DelayedDiagnostic.h
===================================================================
--- clang/include/clang/Sema/DelayedDiagnostic.h
+++ clang/include/clang/Sema/DelayedDiagnostic.h
@@ -312,6 +312,14 @@
pool.Diagnostics.clear();
}
+ void removeAllOfKind(DelayedDiagnostic::DDKind Kind) {
+ Diagnostics.erase(std::remove_if(Diagnostics.begin(), Diagnostics.end(),
+ [Kind](const DelayedDiagnostic &DD) {
+ return DD.Kind == Kind;
+ }),
+ Diagnostics.end());
+ }
+
using pool_iterator = SmallVectorImpl<DelayedDiagnostic>::const_iterator;
pool_iterator pool_begin() const { return Diagnostics.begin(); }
Index: clang/include/clang/Parse/Parser.h
===================================================================
--- clang/include/clang/Parse/Parser.h
+++ clang/include/clang/Parse/Parser.h
@@ -21,6 +21,7 @@
#include "clang/Lex/CodeCompletionHandler.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Sema/DeclSpec.h"
+#include "clang/Sema/DelayedDiagnostic.h"
#include "clang/Sema/Sema.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Frontend/OpenMP/OMPContext.h"
@@ -3486,6 +3487,7 @@
bool isGNUAsmQualifier(const Token &TokAfterAsm) const;
GNUAsmQualifiers::AQ getGNUAsmQualifier(const Token &Tok) const;
bool parseGNUAsmQualifierListOpt(GNUAsmQualifiers &AQ);
+ void RemoveDiagnosticsFromPool(clang::sema::DelayedDiagnostic::DDKind K);
};
} // end namespace clang
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