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-rw-r--r--clang/lib/Sema/SemaDeclObjC.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/clang/lib/Sema/SemaDeclObjC.cpp b/clang/lib/Sema/SemaDeclObjC.cpp
index d7544ecfaf7..6809b48dc8a 100644
--- a/clang/lib/Sema/SemaDeclObjC.cpp
+++ b/clang/lib/Sema/SemaDeclObjC.cpp
@@ -1210,6 +1210,11 @@ Sema::ActOnStartProtocolInterface(SourceLocation AtProtoInterfaceLoc,
PDecl = ObjCProtocolDecl::Create(Context, CurContext, ProtocolName,
ProtocolLoc, AtProtoInterfaceLoc,
/*PrevDecl=*/nullptr);
+
+ // If we are using modules, add the decl to the context in order to
+ // serialize something meaningful.
+ if (getLangOpts().Modules)
+ PushOnScopeChains(PDecl, TUScope);
PDecl->startDefinition();
} else {
if (PrevDecl) {
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