| // RUN: %clang_cc1 -emit-llvm %s -verify -fno-rtti -o - | FileCheck %s |
| // expected-no-diagnostics |
| |
| struct A { |
| virtual ~A(){}; |
| }; |
| |
| struct B : public A { |
| B() : A() {} |
| }; |
| |
| // An upcast can be resolved statically and can be used with -fno-rtti, iff it |
| // does not use runtime support. |
| A *upcast(B *b) { |
| return dynamic_cast<A *>(b); |
| // CHECK-LABEL: define %struct.A* @_Z6upcastP1B |
| // CHECK-NOT: call i8* @__dynamic_cast |
| } |
| |
| // A NoOp dynamic_cast can be used with -fno-rtti iff it does not use |
| // runtime support. |
| B *samecast(B *b) { |
| return dynamic_cast<B *>(b); |
| // CHECK-LABEL: define %struct.B* @_Z8samecastP1B |
| // CHECK-NOT: call i8* @__dynamic_cast |
| } |