prevent simple Any self-assignment

2023-02-13 08:28:35 -08:00
parent e0a8572c2d
commit 4029f5ac3c
2 changed files with 24 additions and 2 deletions
@@ -655,7 +655,10 @@ void Value::copyIn(const void *ptr, StoreType type)
            // assigning variant union.
            auto& val = store->as<Value>();
            if(type==StoreType::Compound) {
-                val = *reinterpret_cast<const Value*>(ptr);
+                auto& newval = *reinterpret_cast<const Value*>(ptr);
+                if(store == newval.store)
+                    throw std::logic_error("Any self-assignment would recurse.  Not allowed.");
+                val = newval;
                break;

            } else {