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57b08b0944
to reflect the new license. These used slightly different spellings that defeated my regular expressions. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351648
49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
//===--------------------- catch_pointer_nullptr.cpp ----------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03, libcxxabi-no-exceptions
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#include <cassert>
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#include <cstdlib>
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struct A {};
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template<typename T, bool CanCatchNullptr>
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static void catch_nullptr_test() {
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try {
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throw nullptr;
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} catch (T &p) {
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assert(CanCatchNullptr && !static_cast<bool>(p));
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} catch (...) {
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assert(!CanCatchNullptr);
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}
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}
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int main()
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{
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using nullptr_t = decltype(nullptr);
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// A reference to nullptr_t can catch nullptr.
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catch_nullptr_test<nullptr_t, true>();
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catch_nullptr_test<const nullptr_t, true>();
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catch_nullptr_test<volatile nullptr_t, true>();
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catch_nullptr_test<const volatile nullptr_t, true>();
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// No other reference type can.
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#if 0
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// FIXME: These tests fail, because the ABI provides no way for us to
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// distinguish this from catching by value.
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catch_nullptr_test<void *, false>();
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catch_nullptr_test<void * const, false>();
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catch_nullptr_test<int *, false>();
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catch_nullptr_test<A *, false>();
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catch_nullptr_test<int A::*, false>();
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catch_nullptr_test<int (A::*)(), false>();
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#endif
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}
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