4684ddb6aa
- import libcxx - reduce targets to the one when compiled as a tools Change-Id: Iabb8427f80ff8e89463559a28bcb8b4f2bdbc496
56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This test uses new symbols that were not defined in the libc++ shipped on
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// darwin11 and darwin12:
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// XFAIL: with_system_lib=x86_64-apple-darwin11
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// XFAIL: with_system_lib=x86_64-apple-darwin12
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// <memory>
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// shared_ptr
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// template <class T>
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// bool
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// atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v,
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// shared_ptr<T> w, memory_order success,
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// memory_order failure);
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#include <memory>
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#include <cassert>
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int main()
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{
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#if __has_feature(cxx_atomic)
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{
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std::shared_ptr<int> p(new int(4));
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std::shared_ptr<int> v(new int(3));
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std::shared_ptr<int> w(new int(2));
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bool b = std::atomic_compare_exchange_strong_explicit(&p, &v, w,
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std::memory_order_seq_cst,
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std::memory_order_seq_cst);
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assert(b == false);
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assert(*p == 4);
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assert(*v == 4);
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assert(*w == 2);
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}
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{
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std::shared_ptr<int> p(new int(4));
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std::shared_ptr<int> v = p;
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std::shared_ptr<int> w(new int(2));
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bool b = std::atomic_compare_exchange_strong_explicit(&p, &v, w,
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std::memory_order_seq_cst,
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std::memory_order_seq_cst);
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assert(b == true);
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assert(*p == 2);
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assert(*v == 4);
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assert(*w == 2);
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}
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#endif
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}
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