nwilson updated this revision to Diff 39030.
nwilson added a comment.
Updating to r251898
http://reviews.llvm.org/D13357
Files:
include/clang/AST/Decl.h
include/clang/Basic/DiagnosticSemaKinds.td
lib/Sema/SemaDecl.cpp
lib/Sema/SemaTemplate.cpp
test/CXX/concepts-ts/dcl.dcl/dcl.spec/dcl.spec.concept/p1.cpp
Index: test/CXX/concepts-ts/dcl.dcl/dcl.spec/dcl.spec.concept/p1.cpp
===================================================================
--- test/CXX/concepts-ts/dcl.dcl/dcl.spec/dcl.spec.concept/p1.cpp
+++ test/CXX/concepts-ts/dcl.dcl/dcl.spec/dcl.spec.concept/p1.cpp
@@ -39,3 +39,20 @@
template <typename T> concept union TCU1 {}; // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
concept bool; // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
+
+template<typename T> concept bool VCEI { true };
+template concept bool VCEI<int>; // expected-error {{'concept' cannot be applied on an explicit instantiation}}
+extern template concept bool VCEI<int>; // expected-error {{'concept' cannot be applied on an explicit instantiation}}
+
+template<typename T> concept bool VCPS { true };
+template<typename T> concept bool VCPS<T*> { true }; // expected-error {{'concept' cannot be applied on an partial specialization}}
+
+template<typename T> concept bool VCES { true };
+template<> concept bool VCES<int> { true }; // expected-error {{'concept' cannot be applied on an explicit specialization}}
+
+template<typename T> concept bool FCEI() { return true; }
+template concept bool FCEI<int>(); // expected-error {{'concept' cannot be applied on an explicit instantiation}}
+extern template concept bool FCEI<int>(); // expected-error {{'concept' cannot be applied on an explicit instantiation}}
+
+template<typename T> concept bool FCES() { return true; }
+template<> concept bool FCES<bool>() { return true; } // expected-error {{'concept' cannot be applied on an explicit specialization}}
Index: lib/Sema/SemaTemplate.cpp
===================================================================
--- lib/Sema/SemaTemplate.cpp
+++ lib/Sema/SemaTemplate.cpp
@@ -7597,6 +7597,17 @@
Diag(D.getDeclSpec().getConstexprSpecLoc(),
diag::err_explicit_instantiation_constexpr);
+ // C++ Concepts TS [dcl.spec.concept]p1: The concept specifier shall be
+ // applied only to the definition of a function template or variable template,
+ // declared in namespace scope. A concept definition refers to either a
+ // function concept and its definition or a variable concept and its
+ // initializer.
+ if (D.getDeclSpec().isConceptSpecified()) {
+ Diag(D.getDeclSpec().getConceptSpecLoc(),
+ diag:: err_concept_specified_specialization) << 0;
+ return true;
+ }
+
// C++0x [temp.explicit]p2:
// There are two forms of explicit instantiation: an explicit instantiation
// definition and an explicit instantiation declaration. An explicit
Index: lib/Sema/SemaDecl.cpp
===================================================================
--- lib/Sema/SemaDecl.cpp
+++ lib/Sema/SemaDecl.cpp
@@ -5898,6 +5898,17 @@
<< 0 << 3;
NewVD->setInvalidDecl(true);
}
+
+ // C++ Concepts TS [dcl.spec.concept]p1: The concept specifier shall be
+ // applied only to the definition of a [...] variable template, declared
+ // in namespace scope. [...] A concept definition refers to [...] a
+ // variable concept and its initializer.
+ if (IsVariableTemplateSpecialization) {
+ Diag(D.getDeclSpec().getConceptSpecLoc(),
+ diag::err_concept_specified_specialization)
+ << (IsPartialSpecialization ? 2 : 1);
+ NewVD->setInvalidDecl(true);
+ }
}
}
@@ -7544,6 +7555,9 @@
}
if (isConcept) {
+ // This is a function concept.
+ NewFD->setConcept(true);
+
// C++ Concepts TS [dcl.spec.concept]p1: The concept specifier shall be
// applied only to the definition of a function template [...]
if (!D.isFunctionDefinition()) {
@@ -7595,6 +7609,15 @@
<< 1 << 3;
NewFD->setInvalidDecl(true);
}
+
+ // C++ Concepts TS [dcl.spec.concept]p1: The concept specifier shall be
+ // applied only to the definition of a function template [...], declared
+ // in namespace scope. [...] A concept definition refers to either a
+ // function concept and its definition [...].
+ if (isFunctionTemplateSpecialization) {
+ Diag(D.getDeclSpec().getConceptSpecLoc(),
+ diag::err_concept_specified_specialization) << 1;
+ }
}
// If __module_private__ was specified, mark the function accordingly.
@@ -7858,7 +7881,7 @@
TemplateArgs);
HasExplicitTemplateArgs = true;
-
+
if (NewFD->isInvalidDecl()) {
HasExplicitTemplateArgs = false;
} else if (FunctionTemplate) {
Index: include/clang/Basic/DiagnosticSemaKinds.td
===================================================================
--- include/clang/Basic/DiagnosticSemaKinds.td
+++ include/clang/Basic/DiagnosticSemaKinds.td
@@ -1990,6 +1990,9 @@
def err_concept_decl_invalid_specifiers : Error<
"%select{variable|function}0 concept cannot be declared "
"'%select{thread_local|inline|friend|constexpr}1'">;
+def err_concept_specified_specialization : Error<
+ "%'concept' cannot be applied on an "
+ "%select{explicit instantiation|explicit specialization|partial specialization}0">;
// C++11 char16_t/char32_t
def warn_cxx98_compat_unicode_type : Warning<
Index: include/clang/AST/Decl.h
===================================================================
--- include/clang/AST/Decl.h
+++ include/clang/AST/Decl.h
@@ -1574,6 +1574,7 @@
bool HasImplicitReturnZero : 1;
bool IsLateTemplateParsed : 1;
bool IsConstexpr : 1;
+ bool IsConcept : 1;
/// \brief Indicates if the function uses __try.
bool UsesSEHTry : 1;
@@ -1847,6 +1848,10 @@
bool isConstexpr() const { return IsConstexpr; }
void setConstexpr(bool IC) { IsConstexpr = IC; }
+ /// Whether this is a (C++ Concepts TS) function concept.
+ bool isConcept() const { return IsConcept; }
+ void setConcept(bool IC) { IsConcept = IC; }
+
/// \brief Indicates the function uses __try.
bool usesSEHTry() const { return UsesSEHTry; }
void setUsesSEHTry(bool UST) { UsesSEHTry = UST; }
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