Implement DR85: Redeclaration of member is forbidden
Disallow the existence of a declaration of a member class that isn't a
forward declaration before it's definition.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@183722 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index c17328d..c519bfa 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -9885,6 +9885,16 @@
return TUK == TUK_Declaration ? PrevTagDecl : 0;
}
+ // C++11 [class.mem]p1:
+ // A member shall not be declared twice in the member-speciļ¬cation,
+ // except that a nested class or member class template can be declared
+ // and then later defined.
+ if (TUK == TUK_Declaration && PrevDecl->isCXXClassMember() &&
+ S->isDeclScope(PrevDecl)) {
+ Diag(NameLoc, diag::ext_member_redeclared);
+ Diag(PrevTagDecl->getLocation(), diag::note_previous_declaration);
+ }
+
if (!Invalid) {
// If this is a use, just return the declaration we found.