Support decltype in nested-name-specifiers.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145785 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaCXXScopeSpec.cpp b/lib/Sema/SemaCXXScopeSpec.cpp
index dfd59bf..93f8325 100644
--- a/lib/Sema/SemaCXXScopeSpec.cpp
+++ b/lib/Sema/SemaCXXScopeSpec.cpp
@@ -676,6 +676,29 @@
/*ScopeLookupResult=*/0, false);
}
+bool Sema::ActOnCXXNestedNameSpecifierDecltype(CXXScopeSpec &SS,
+ const DeclSpec &DS,
+ SourceLocation ColonColonLoc) {
+ if (SS.isInvalid() || DS.getTypeSpecType() == DeclSpec::TST_error)
+ return true;
+
+ assert(DS.getTypeSpecType() == DeclSpec::TST_decltype);
+
+ QualType T = BuildDecltypeType(DS.getRepAsExpr(), DS.getTypeSpecTypeLoc());
+ if (!T->isDependentType() && !T->getAs<TagType>()) {
+ Diag(DS.getTypeSpecTypeLoc(), diag::err_expected_class)
+ << T << getLangOptions().CPlusPlus;
+ return true;
+ }
+
+ TypeLocBuilder TLB;
+ DecltypeTypeLoc DecltypeTL = TLB.push<DecltypeTypeLoc>(T);
+ DecltypeTL.setNameLoc(DS.getTypeSpecTypeLoc());
+ SS.Extend(Context, SourceLocation(), TLB.getTypeLocInContext(Context, T),
+ ColonColonLoc);
+ return false;
+}
+
/// IsInvalidUnlessNestedName - This method is used for error recovery
/// purposes to determine whether the specified identifier is only valid as
/// a nested name specifier, for example a namespace name. It is