[PATCH] D11490: [Concepts] Add diagnostic: non template declaration
Nathan Wilson
nwilson20 at gmail.com
Fri Jul 24 13:22:04 PDT 2015
nwilson updated this revision to Diff 30598.
nwilson added a comment.
modifying diagnostic message to: 'concept' can only appear on the definition of a function template or variable template
http://reviews.llvm.org/D11490
Files:
include/clang/Basic/DiagnosticSemaKinds.td
lib/Sema/SemaDecl.cpp
test/SemaCXX/cxx-concept-declaration.cpp
Index: test/SemaCXX/cxx-concept-declaration.cpp
===================================================================
--- test/SemaCXX/cxx-concept-declaration.cpp
+++ test/SemaCXX/cxx-concept-declaration.cpp
@@ -15,3 +15,7 @@
struct C {
template<typename T> static concept bool D3 = true; // expected-error {{concept declarations may only appear in namespace scope}}
};
+
+concept bool D4() { return true; } // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
+
+concept bool D5 = true; // expected-error {{'concept' can only appear on the definition of a function template or variable template}}
Index: lib/Sema/SemaDecl.cpp
===================================================================
--- lib/Sema/SemaDecl.cpp
+++ lib/Sema/SemaDecl.cpp
@@ -4865,6 +4865,12 @@
// 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
+ if (!TemplateParamLists.size()) {
+ Diag(D.getDeclSpec().getConceptSpecLoc(),
+ diag::err_concept_decl_non_template);
+ return nullptr;
+ }
+
if (!DC->getRedeclContext()->isFileContext()) {
Diag(D.getIdentifierLoc(),
diag::err_concept_decls_may_only_appear_in_namespace_scope);
Index: include/clang/Basic/DiagnosticSemaKinds.td
===================================================================
--- include/clang/Basic/DiagnosticSemaKinds.td
+++ include/clang/Basic/DiagnosticSemaKinds.td
@@ -1966,6 +1966,8 @@
"use __attribute__((visibility(\"hidden\"))) attribute instead">;
// C++ Concepts TS
+def err_concept_decl_non_template : Error<
+ "'concept' can only appear on the definition of a function template or variable template">;
def err_concept_decls_may_only_appear_in_namespace_scope : Error<
"concept declarations may only appear in namespace scope">;
def err_function_concept_not_defined : Error<
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