diff options
Diffstat (limited to 'current/sources/cxx-stl/llvm-libc++abi/test/catch_reference_nullptr.pass.cpp')
-rw-r--r-- | current/sources/cxx-stl/llvm-libc++abi/test/catch_reference_nullptr.pass.cpp | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/current/sources/cxx-stl/llvm-libc++abi/test/catch_reference_nullptr.pass.cpp b/current/sources/cxx-stl/llvm-libc++abi/test/catch_reference_nullptr.pass.cpp new file mode 100644 index 000000000..a15eb3c71 --- /dev/null +++ b/current/sources/cxx-stl/llvm-libc++abi/test/catch_reference_nullptr.pass.cpp @@ -0,0 +1,49 @@ +//===--------------------- catch_pointer_nullptr.cpp ----------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +// UNSUPPORTED: c++98, c++03, +// UNSUPPORTED: no-exceptions + +#include <cassert> +#include <cstdlib> + +struct A {}; + +template<typename T, bool CanCatchNullptr> +static void catch_nullptr_test() { + try { + throw nullptr; + } catch (T &p) { + assert(CanCatchNullptr && !static_cast<bool>(p)); + } catch (...) { + assert(!CanCatchNullptr); + } +} + +int main() +{ + using nullptr_t = decltype(nullptr); + + // A reference to nullptr_t can catch nullptr. + catch_nullptr_test<nullptr_t, true>(); + catch_nullptr_test<const nullptr_t, true>(); + catch_nullptr_test<volatile nullptr_t, true>(); + catch_nullptr_test<const volatile nullptr_t, true>(); + + // No other reference type can. +#if 0 + // FIXME: These tests fail, because the ABI provides no way for us to + // distinguish this from catching by value. + catch_nullptr_test<void *, false>(); + catch_nullptr_test<void * const, false>(); + catch_nullptr_test<int *, false>(); + catch_nullptr_test<A *, false>(); + catch_nullptr_test<int A::*, false>(); + catch_nullptr_test<int (A::*)(), false>(); +#endif +} |