Remove unused cast implementation
PiperOrigin-RevId: 549456180
Change-Id: I10862e6de981087a5c590cccf6152255e9a176a0
diff --git a/googletest/include/gtest/internal/gtest-port.h b/googletest/include/gtest/internal/gtest-port.h
index 514b1cc..656df26 100644
--- a/googletest/include/gtest/internal/gtest-port.h
+++ b/googletest/include/gtest/internal/gtest-port.h
@@ -1146,47 +1146,6 @@
return x;
}
-// When you upcast (that is, cast a pointer from type Foo to type
-// SuperclassOfFoo), it's fine to use ImplicitCast_<>, since upcasts
-// always succeed. When you downcast (that is, cast a pointer from
-// type Foo to type SubclassOfFoo), static_cast<> isn't safe, because
-// how do you know the pointer is really of type SubclassOfFoo? It
-// could be a bare Foo, or of type DifferentSubclassOfFoo. Thus,
-// when you downcast, you should use this macro. In debug mode, we
-// use dynamic_cast<> to double-check the downcast is legal (we die
-// if it's not). In normal mode, we do the efficient static_cast<>
-// instead. Thus, it's important to test in debug mode to make sure
-// the cast is legal!
-// This is the only place in the code we should use dynamic_cast<>.
-// In particular, you SHOULDN'T be using dynamic_cast<> in order to
-// do RTTI (eg code like this:
-// if (dynamic_cast<Subclass1>(foo)) HandleASubclass1Object(foo);
-// if (dynamic_cast<Subclass2>(foo)) HandleASubclass2Object(foo);
-// You should design the code some other way not to need this.
-//
-// This relatively ugly name is intentional. It prevents clashes with
-// similar functions users may have (e.g., down_cast). The internal
-// namespace alone is not enough because the function can be found by ADL.
-template <typename To, typename From> // use like this: DownCast_<T*>(foo);
-inline To DownCast_(From* f) { // so we only accept pointers
- // Ensures that To is a sub-type of From *. This test is here only
- // for compile-time type checking, and has no overhead in an
- // optimized build at run-time, as it will be optimized away
- // completely.
- GTEST_INTENTIONAL_CONST_COND_PUSH_()
- if (false) {
- GTEST_INTENTIONAL_CONST_COND_POP_()
- const To to = nullptr;
- ::testing::internal::ImplicitCast_<From*>(to);
- }
-
-#if GTEST_HAS_RTTI
- // RTTI: debug mode only!
- GTEST_CHECK_(f == nullptr || dynamic_cast<To>(f) != nullptr);
-#endif
- return static_cast<To>(f);
-}
-
// Downcasts the pointer of type Base to Derived.
// Derived must be a subclass of Base. The parameter MUST
// point to a class of type Derived, not any subclass of it.
