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-rw-r--r--clang/lib/Sema/SemaDeclObjC.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/clang/lib/Sema/SemaDeclObjC.cpp b/clang/lib/Sema/SemaDeclObjC.cpp
index 6f0206f0884..a2f41a7cc30 100644
--- a/clang/lib/Sema/SemaDeclObjC.cpp
+++ b/clang/lib/Sema/SemaDeclObjC.cpp
@@ -1867,6 +1867,8 @@ Decl *Sema::ActOnStartClassImplementation(
Diag(ClassLoc, diag::err_redefinition_different_kind) << ClassName;
Diag(PrevDecl->getLocation(), diag::note_previous_definition);
} else if ((IDecl = dyn_cast_or_null<ObjCInterfaceDecl>(PrevDecl))) {
+ // FIXME: This will produce an error if the definition of the interface has
+ // been imported from a module but is not visible.
RequireCompleteType(ClassLoc, Context.getObjCInterfaceType(IDecl),
diag::warn_undef_interface);
} else {
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