Files
clang-p2996/clang/test/CodeGenCXX/dynamic_cast-no-rtti.cpp
Nikita Popov 532dc62b90 [OpaquePtrs][Clang] Add -no-opaque-pointers to tests (NFC)
This adds -no-opaque-pointers to clang tests whose output will
change when opaque pointers are enabled by default. This is
intended to be part of the migration approach described in
https://discourse.llvm.org/t/enabling-opaque-pointers-by-default/61322/9.

The patch has been produced by replacing %clang_cc1 with
%clang_cc1 -no-opaque-pointers for tests that fail with opaque
pointers enabled. Worth noting that this doesn't cover all tests,
there's a remaining ~40 tests not using %clang_cc1 that will need
a followup change.

Differential Revision: https://reviews.llvm.org/D123115
2022-04-07 12:09:47 +02:00

27 lines
728 B
C++

// RUN: %clang_cc1 -no-opaque-pointers -emit-llvm %s -verify -fno-rtti -triple %itanium_abi_triple -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
}