[clang][Interp][NFC] Add an assertion

This is unnecessary in the current state of the interpreter, but will ne
important later.

diff --git a/clang/lib/AST/Interp/ByteCodeExprGen.h b/clang/lib/AST/Interp/ByteCodeExprGen.h
index f817fb4..4e4f2ee 100644 (file)
--- a/clang/lib/AST/Interp/ByteCodeExprGen.h
+++ b/clang/lib/AST/Interp/ByteCodeExprGen.h
@@ -359,6 +359,7 @@ public:
   ExprScope(ByteCodeExprGen<Emitter> *Ctx) : LocalScope<Emitter>(Ctx) {}
 
   void addExtended(const Scope::Local &Local) override {
+    assert(this->Parent);
     this->Parent->addLocal(Local);
   }
 };