Diagnose cases where the definition of a particular type is required,

is known (to Clang), but is not visible because the module has not yet
been imported.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147436 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 0 deletions

diff --git a/lib/Sema/SemaExprMember.cpp b/lib/Sema/SemaExprMember.cpp
index 65e444915c..3e7f8314d5 100644
--- a/lib/Sema/SemaExprMember.cpp
+++ b/lib/Sema/SemaExprMember.cpp
@@ -1084,6 +1084,11 @@ Sema::LookupMemberExpr(LookupResult &R, ExprResult &BaseExpr,
       goto fail;
     }
 
+    if (RequireCompleteType(OpLoc, BaseType, 
+                            PDiag(diag::err_typecheck_incomplete_tag)
+                              << BaseExpr.get()->getSourceRange()))
+      return ExprError();
+    
     ObjCInterfaceDecl *ClassDeclared;
     ObjCIvarDecl *IV = IDecl->lookupInstanceVariable(Member, ClassDeclared);