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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@121202 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Howard Hinnant 2010-12-07 23:20:28 +00:00
parent 91e2f26fec
commit f02417b600
7 changed files with 480 additions and 748 deletions
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126
test/atomics/atomics.types.generic/address.pass.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <atomic>
// template <class T>
// struct atomic<T*>
// {
// bool is_lock_free() const volatile;
// bool is_lock_free() const;
// void store(T* desr, memory_order m = memory_order_seq_cst) volatile;
// void store(T* desr, memory_order m = memory_order_seq_cst);
// T* load(memory_order m = memory_order_seq_cst) const volatile;
// T* load(memory_order m = memory_order_seq_cst) const;
// operator T*() const volatile;
// operator T*() const;
// T* exchange(T* desr, memory_order m = memory_order_seq_cst) volatile;
// T* exchange(T* desr, memory_order m = memory_order_seq_cst);
// bool compare_exchange_weak(T*& expc, T* desr,
// memory_order s, memory_order f) volatile;
// bool compare_exchange_weak(T*& expc, T* desr,
// memory_order s, memory_order f);
// bool compare_exchange_strong(T*& expc, T* desr,
// memory_order s, memory_order f) volatile;
// bool compare_exchange_strong(T*& expc, T* desr,
// memory_order s, memory_order f);
// bool compare_exchange_weak(T*& expc, T* desr,
// memory_order m = memory_order_seq_cst) volatile;
// bool compare_exchange_weak(T*& expc, T* desr,
// memory_order m = memory_order_seq_cst);
// bool compare_exchange_strong(T*& expc, T* desr,
// memory_order m = memory_order_seq_cst) volatile;
// bool compare_exchange_strong(T*& expc, T* desr,
// memory_order m = memory_order_seq_cst);
// T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile;
// T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst);
// T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile;
// T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst);
//
// atomic() = default;
// constexpr atomic(T* desr);
// atomic(const atomic&) = delete;
// atomic& operator=(const atomic&) = delete;
// atomic& operator=(const atomic&) volatile = delete;
//
// T* operator=(T*) volatile;
// T* operator=(T*);
// T* operator++(int) volatile;
// T* operator++(int);
// T* operator--(int) volatile;
// T* operator--(int);
// T* operator++() volatile;
// T* operator++();
// T* operator--() volatile;
// T* operator--();
// T* operator+=(ptrdiff_t op) volatile;
// T* operator+=(ptrdiff_t op);
// T* operator-=(ptrdiff_t op) volatile;
// T* operator-=(ptrdiff_t op);
// };
#include <atomic>
#include <cassert>
template <class A, class T>
void
do_test()
{
typedef typename std::remove_pointer<T>::type X;
A obj(T(0));
assert(obj == T(0));
std::atomic_init(&obj, T(1));
assert(obj == T(1));
std::atomic_init(&obj, T(2));
assert(obj == T(2));
bool b0 = obj.is_lock_free();
obj.store(T(0));
assert(obj == T(0));
obj.store(T(1), std::memory_order_release);
assert(obj == T(1));
assert(obj.load() == T(1));
assert(obj.load(std::memory_order_acquire) == T(1));
assert(obj.exchange(T(2)) == T(1));
assert(obj == T(2));
assert(obj.exchange(T(3), std::memory_order_relaxed) == T(2));
assert(obj == T(3));
T x = obj;
assert(obj.compare_exchange_weak(x, T(2)) == true);
assert(obj == T(2));
assert(x == T(3));
assert(obj.compare_exchange_weak(x, T(1)) == false);
assert(obj == T(2));
assert(x == T(1));
x = T(2);
assert(obj.compare_exchange_strong(x, T(1)) == true);
assert(obj == T(1));
assert(x == T(2));
assert(obj.compare_exchange_strong(x, T(0)) == false);
assert(obj == T(1));
assert(x == T(0));
assert((obj = T(0)) == T(0));
assert(obj == T(0));
obj = T(2*sizeof(X));
assert((obj += std::ptrdiff_t(3)) == T(5*sizeof(X)));
assert(obj == T(5*sizeof(X)));
assert((obj -= std::ptrdiff_t(3)) == T(2*sizeof(X)));
assert(obj == T(2*sizeof(X)));
}
template <class A, class T>
void test()
{
do_test<A, T>();
do_test<volatile A, T>();
}
int main()
{
test<std::atomic<int*>, int*>();
}

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test/atomics/atomics.types.generic/atomics.types.address/address.pass.cpp
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <atomic>
// typedef struct atomic_address
// {
// bool is_lock_free() const volatile;
// bool is_lock_free() const;
// void store(void*, memory_order = memory_order_seq_cst) volatile;
// void store(void*, memory_order = memory_order_seq_cst);
// void* load(memory_order = memory_order_seq_cst) const volatile;
// void* load(memory_order = memory_order_seq_cst) const;
// operator void*() const volatile;
// operator void*() const;
// void* exchange(void*, memory_order = memory_order_seq_cst) volatile;
// void* exchange(void*, memory_order = memory_order_seq_cst);
// bool compare_exchange_weak(void*&, void*, memory_order,
// memory_order) volatile;
// bool compare_exchange_weak(void*&, void*, memory_order, memory_order);
// bool compare_exchange_strong(void*&, void*, memory_order,
// memory_order) volatile;
// bool compare_exchange_strong(void*&, void*, memory_order, memory_order);
// bool compare_exchange_weak(void*&, void*,
// memory_order = memory_order_seq_cst) volatile;
// bool compare_exchange_weak(void*&, void*,
// memory_order = memory_order_seq_cst);
// bool compare_exchange_strong(void*&, void*,
// memory_order = memory_order_seq_cst) volatile;
// bool compare_exchange_strong(void*&, void*,
// memory_order = memory_order_seq_cst);
// bool compare_exchange_weak(const void*&, const void*,
// memory_order, memory_order) volatile;
// bool compare_exchange_weak(const void*&, const void*, memory_order,
// memory_order);
// bool compare_exchange_strong(const void*&, const void*, memory_order,
// memory_order) volatile;
// bool compare_exchange_strong(const void*&, const void*, memory_order,
// memory_order);
// bool compare_exchange_weak(const void*&, const void*,
// memory_order = memory_order_seq_cst) volatile;
// bool compare_exchange_weak(const void*&, const void*,
// memory_order = memory_order_seq_cst);
// bool compare_exchange_strong(const void*&, const void*,
// memory_order = memory_order_seq_cst) volatile;
// bool compare_exchange_strong(const void*&, const void*,
// memory_order = memory_order_seq_cst);
// void* fetch_add(ptrdiff_t, memory_order = memory_order_seq_cst) volatile;
// void* fetch_add(ptrdiff_t, memory_order = memory_order_seq_cst);
// void* fetch_sub(ptrdiff_t, memory_order = memory_order_seq_cst) volatile;
// void* fetch_sub(ptrdiff_t, memory_order = memory_order_seq_cst);
// atomic_address() = default;
// constexpr atomic_address(void*);
// atomic_address(const atomic_address&) = delete;
// atomic_address& operator=(const atomic_address&) = delete;
// atomic_address& operator=(const atomic_address&) volatile = delete;
// void* operator=(const void*) volatile;
// void* operator=(const void*);
// void* operator+=(ptrdiff_t) volatile;
// void* operator+=(ptrdiff_t);
// void* operator-=(ptrdiff_t) volatile;
// void* operator-=(ptrdiff_t);
// } atomic_address;
//
// bool atomic_is_lock_free(const volatile atomic_address*);
// bool atomic_is_lock_free(const atomic_address*);
// void atomic_init(volatile atomic_address*, void*);
// void atomic_init(atomic_address*, void*);
// void atomic_store(volatile atomic_address*, void*);
// void atomic_store(atomic_address*, void*);
// void atomic_store_explicit(volatile atomic_address*, void*, memory_order);
// void atomic_store_explicit(atomic_address*, void*, memory_order);
// void* atomic_load(const volatile atomic_address*);
// void* atomic_load(const atomic_address*);
// void* atomic_load_explicit(const volatile atomic_address*, memory_order);
// void* atomic_load_explicit(const atomic_address*, memory_order);
// void* atomic_exchange(volatile atomic_address*, void*);
// void* atomic_exchange(atomic_address*, void*);
// void* atomic_exchange_explicit(volatile atomic_address*, void*, memory_order);
// void* atomic_exchange_explicit(atomic_address*, void*, memory_order);
// bool atomic_compare_exchange_weak(volatile atomic_address*, void**, void*);
// bool atomic_compare_exchange_weak(atomic_address*, void**, void*);
// bool atomic_compare_exchange_strong(volatile atomic_address*, void**, void*);
// bool atomic_compare_exchange_strong(atomic_address*, void**, void*);
// bool atomic_compare_exchange_weak_explicit(volatile atomic_address*, void**,
// void*, memory_order, memory_order);
// bool atomic_compare_exchange_weak_explicit(atomic_address*, void**, void*,
// memory_order, memory_order);
// bool atomic_compare_exchange_strong_explicit(volatile atomic_address*, void**,
// void*, memory_order, memory_order);
// bool atomic_compare_exchange_strong_explicit(atomic_address*, void**, void*,
// memory_order, memory_order);
// void* atomic_fetch_add(volatile atomic_address*, ptrdiff_t);
// void* atomic_fetch_add(atomic_address*, ptrdiff_t);
// void* atomic_fetch_add_explicit(volatile atomic_address*, ptrdiff_t,
// memory_order);
// void* atomic_fetch_add_explicit(atomic_address*, ptrdiff_t, memory_order);
// void* atomic_fetch_sub(volatile atomic_address*, ptrdiff_t);
// void* atomic_fetch_sub(atomic_address*, ptrdiff_t);
// void* atomic_fetch_sub_explicit(volatile atomic_address*, ptrdiff_t,
// memory_order);
// void* atomic_fetch_sub_explicit(atomic_address*, ptrdiff_t, memory_order);
#include <atomic>
#include <cassert>
template <class A, class T>
void
do_test()
{
A obj(T(0));
assert(obj == T(0));
std::atomic_init(&obj, T(1));
assert(obj == T(1));
std::atomic_init(&obj, T(2));
assert(obj == T(2));
bool b0 = obj.is_lock_free();
obj.store(T(0));
assert(obj == T(0));
obj.store(T(1), std::memory_order_release);
assert(obj == T(1));
assert(obj.load() == T(1));
assert(obj.load(std::memory_order_acquire) == T(1));
assert(obj.exchange(T(2)) == T(1));
assert(obj == T(2));
assert(obj.exchange(T(3), std::memory_order_relaxed) == T(2));
assert(obj == T(3));
T x = obj;
assert(obj.compare_exchange_weak(x, T(2)) == true);
assert(obj == T(2));
assert(x == T(3));
assert(obj.compare_exchange_weak(x, T(1)) == false);
assert(obj == T(2));
assert(x == T(2));
assert(obj.compare_exchange_strong(x, T(1)) == true);
assert(obj == T(1));
assert(x == T(2));
assert(obj.compare_exchange_strong(x, T(0)) == false);
assert(obj == T(1));
assert(x == T(1));
assert((obj = T(0)) == T(0));
assert(obj == T(0));
obj = T(2);
assert((obj += std::ptrdiff_t(3)) == T(5));
assert(obj == T(5));
assert((obj -= std::ptrdiff_t(3)) == T(2));
assert(obj == T(2));
std::atomic_init(&obj, T(1));
assert(obj == T(1));
bool b1 = std::atomic_is_lock_free(&obj);
std::atomic_store(&obj, T(0));
assert(obj == T(0));
std::atomic_store_explicit(&obj, T(1), std::memory_order_release);
assert(obj == T(1));
assert(std::atomic_load(&obj) == T(1));
assert(std::atomic_load_explicit(&obj, std::memory_order_acquire) == T(1));
assert(std::atomic_exchange(&obj, T(2)) == T(1));
assert(obj == T(2));
assert(std::atomic_exchange_explicit(&obj, T(3), std::memory_order_relaxed) == T(2));
assert(obj == T(3));
x = obj;
assert(std::atomic_compare_exchange_weak(&obj, &x, T(2)) == true);
assert(obj == T(2));
assert(x == T(3));
assert(std::atomic_compare_exchange_weak(&obj, &x, T(1)) == false);
assert(obj == T(2));
assert(x == T(2));
assert(std::atomic_compare_exchange_strong(&obj, &x, T(1)) == true);
assert(obj == T(1));
assert(x == T(2));
assert(std::atomic_compare_exchange_strong(&obj, &x, T(0)) == false);
assert(obj == T(1));
assert(x == T(1));
assert(std::atomic_compare_exchange_weak_explicit(&obj, &x, T(2),
std::memory_order_relaxed, std::memory_order_relaxed) == true);
assert(obj == T(2));
assert(x == T(1));
assert(std::atomic_compare_exchange_weak_explicit(&obj, &x, T(3),
std::memory_order_relaxed, std::memory_order_relaxed) == false);
assert(obj == T(2));
assert(x == T(2));
assert(std::atomic_compare_exchange_strong_explicit(&obj, &x, T(3),
std::memory_order_relaxed, std::memory_order_relaxed) == true);
assert(obj == T(3));
assert(x == T(2));
assert(std::atomic_compare_exchange_strong_explicit(&obj, &x, T(0),
std::memory_order_relaxed, std::memory_order_relaxed) == false);
assert(obj == T(3));
assert(x == T(3));
assert((obj = T(1)) == T(1));
assert(obj == T(1));
obj = T(2);
assert(std::atomic_fetch_add(&obj, std::ptrdiff_t(3)) == T(2));
assert(obj == T(5));
assert(std::atomic_fetch_add_explicit(&obj, std::ptrdiff_t(3), std::memory_order_seq_cst) == T(5));
assert(obj == T(8));
assert(std::atomic_fetch_sub(&obj, std::ptrdiff_t(3)) == T(8));
assert(obj == T(5));
assert(std::atomic_fetch_sub_explicit(&obj, std::ptrdiff_t(3), std::memory_order_seq_cst) == T(5));
assert(obj == T(2));
}
template <class A, class T>
void test()
{
do_test<A, T>();
do_test<volatile A, T>();
}
int main()
{
test<std::atomic_address, void*>();
}

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test/atomics/atomics.types.generic/atomics.types.integral/bool.pass.cpp
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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <atomic>
// typedef struct atomic_bool
// {
// bool is_lock_free() const volatile;
// bool is_lock_free() const;
// void store(bool, memory_order = memory_order_seq_cst) volatile;
// void store(bool, memory_order = memory_order_seq_cst);
// bool load(memory_order = memory_order_seq_cst) const volatile;
// bool load(memory_order = memory_order_seq_cst) const;
// operator bool() const volatile;
// operator bool() const;
// bool exchange(bool, memory_order = memory_order_seq_cst) volatile;
// bool exchange(bool, memory_order = memory_order_seq_cst);
// bool compare_exchange_weak(bool&, bool, memory_order,
// memory_order) volatile;
// bool compare_exchange_weak(bool&, bool, memory_order, memory_order);
// bool compare_exchange_strong(bool&, bool, memory_order,
// memory_order) volatile;
// bool compare_exchange_strong(bool&, bool, memory_order, memory_order);
// bool compare_exchange_weak(bool&, bool,
// memory_order = memory_order_seq_cst) volatile;
// bool compare_exchange_weak(bool&, bool,
// memory_order = memory_order_seq_cst);
// bool compare_exchange_strong(bool&, bool,
// memory_order = memory_order_seq_cst) volatile;
// bool compare_exchange_strong(bool&, bool,
// memory_order = memory_order_seq_cst);
// atomic_bool() = default;
// constexpr atomic_bool(bool);
// atomic_bool(const atomic_bool&) = delete;
// atomic_bool& operator=(const atomic_bool&) = delete;
// atomic_bool& operator=(const atomic_bool&) volatile = delete;
// bool operator=(bool) volatile;
// bool operator=(bool);
// } atomic_bool;
//
// bool atomic_is_lock_free(const volatile atomic_bool*);
// bool atomic_is_lock_free(const atomic_bool*);
// void atomic_init(volatile atomic_bool*, bool);
// void atomic_init(atomic_bool*, bool);
// void atomic_store(volatile atomic_bool*, bool);
// void atomic_store(atomic_bool*, bool);
// void atomic_store_explicit(volatile atomic_bool*, bool, memory_order);
// void atomic_store_explicit(atomic_bool*, bool, memory_order);
// bool atomic_load(const volatile atomic_bool*);
// bool atomic_load(const atomic_bool*);
// bool atomic_load_explicit(const volatile atomic_bool*, memory_order);
// bool atomic_load_explicit(const atomic_bool*, memory_order);
// bool atomic_exchange(volatile atomic_bool*, bool);
// bool atomic_exchange(atomic_bool*, bool);
// bool atomic_exchange_explicit(volatile atomic_bool*, bool, memory_order);
// bool atomic_exchange_explicit(atomic_bool*, bool, memory_order);
// bool atomic_compare_exchange_weak(volatile atomic_bool*, bool*, bool);
// bool atomic_compare_exchange_weak(atomic_bool*, bool*, bool);
// bool atomic_compare_exchange_strong(volatile atomic_bool*, bool*, bool);
// bool atomic_compare_exchange_strong(atomic_bool*, bool*, bool);
// bool atomic_compare_exchange_weak_explicit(volatile atomic_bool*, bool*, bool,
// memory_order, memory_order);
// bool atomic_compare_exchange_weak_explicit(atomic_bool*, bool*, bool,
// memory_order, memory_order);
// bool atomic_compare_exchange_strong_explicit(volatile atomic_bool*, bool*, bool,
// memory_order, memory_order);
// bool atomic_compare_exchange_strong_explicit(atomic_bool*, bool*, bool,
// memory_order, memory_order);
#include <atomic>
#include <cassert>
int main()
{
{
volatile std::atomic_bool obj(true);
assert(obj == true);
std::atomic_init(&obj, false);
assert(obj == false);
std::atomic_init(&obj, true);
assert(obj == true);
bool b0 = obj.is_lock_free();
obj.store(false);
assert(obj == false);
obj.store(true, std::memory_order_release);
assert(obj == true);
assert(obj.load() == true);
assert(obj.load(std::memory_order_acquire) == true);
assert(obj.exchange(false) == true);
assert(obj == false);
assert(obj.exchange(true, std::memory_order_relaxed) == false);
assert(obj == true);
bool x = obj;
assert(obj.compare_exchange_weak(x, false) == true);
assert(obj == false);
assert(x == true);
assert(obj.compare_exchange_weak(x, true) == false);
assert(obj == false);
assert(x == false);
assert(obj.compare_exchange_strong(x, true) == true);
assert(obj == true);
assert(x == false);
assert(obj.compare_exchange_strong(x, false) == false);
assert(obj == true);
assert(x == true);
assert((obj = false) == false);
assert(obj == false);
std::atomic_init(&obj, true);
assert(obj == true);
bool b1 = std::atomic_is_lock_free(&obj);
std::atomic_store(&obj, false);
assert(obj == false);
std::atomic_store_explicit(&obj, true, std::memory_order_release);
assert(obj == true);
assert(std::atomic_load(&obj) == true);
assert(std::atomic_load_explicit(&obj, std::memory_order_acquire) == true);
assert(std::atomic_exchange(&obj, false) == true);
assert(obj == false);
assert(std::atomic_exchange_explicit(&obj, true, std::memory_order_relaxed) == false);
assert(obj == true);
x = obj;
assert(std::atomic_compare_exchange_weak(&obj, &x, false) == true);
assert(obj == false);
assert(x == true);
assert(std::atomic_compare_exchange_weak(&obj, &x, true) == false);
assert(obj == false);
assert(x == false);
assert(std::atomic_compare_exchange_strong(&obj, &x, true) == true);
assert(obj == true);
assert(x == false);
assert(std::atomic_compare_exchange_strong(&obj, &x, false) == false);
assert(obj == true);
assert(x == true);
assert(std::atomic_compare_exchange_weak_explicit(&obj, &x, false,
std::memory_order_relaxed, std::memory_order_relaxed) == true);
assert(obj == false);
assert(x == true);
assert(std::atomic_compare_exchange_weak_explicit(&obj, &x, true,
std::memory_order_relaxed, std::memory_order_relaxed) == false);
assert(obj == false);
assert(x == false);
assert(std::atomic_compare_exchange_strong_explicit(&obj, &x, true,
std::memory_order_relaxed, std::memory_order_relaxed) == true);
assert(obj == true);
assert(x == false);
assert(std::atomic_compare_exchange_strong_explicit(&obj, &x, false,
std::memory_order_relaxed, std::memory_order_relaxed) == false);
assert(obj == true);
assert(x == true);
assert((obj = false) == false);
assert(obj == false);
}
{
std::atomic_bool obj(true);
assert(obj == true);
std::atomic_init(&obj, false);
assert(obj == false);
std::atomic_init(&obj, true);
assert(obj == true);
bool b0 = obj.is_lock_free();
obj.store(false);
assert(obj == false);
obj.store(true, std::memory_order_release);
assert(obj == true);
assert(obj.load() == true);
assert(obj.load(std::memory_order_acquire) == true);
assert(obj.exchange(false) == true);
assert(obj == false);
assert(obj.exchange(true, std::memory_order_relaxed) == false);
assert(obj == true);
bool x = obj;
assert(obj.compare_exchange_weak(x, false) == true);
assert(obj == false);
assert(x == true);
assert(obj.compare_exchange_weak(x, true) == false);
assert(obj == false);
assert(x == false);
assert(obj.compare_exchange_strong(x, true) == true);
assert(obj == true);
assert(x == false);
assert(obj.compare_exchange_strong(x, false) == false);
assert(obj == true);
assert(x == true);
assert((obj = false) == false);
assert(obj == false);
std::atomic_init(&obj, true);
assert(obj == true);
bool b1 = std::atomic_is_lock_free(&obj);
std::atomic_store(&obj, false);
assert(obj == false);
std::atomic_store_explicit(&obj, true, std::memory_order_release);
assert(obj == true);
assert(std::atomic_load(&obj) == true);
assert(std::atomic_load_explicit(&obj, std::memory_order_acquire) == true);
assert(std::atomic_exchange(&obj, false) == true);
assert(obj == false);
assert(std::atomic_exchange_explicit(&obj, true, std::memory_order_relaxed) == false);
assert(obj == true);
x = obj;
assert(std::atomic_compare_exchange_weak(&obj, &x, false) == true);
assert(obj == false);
assert(x == true);
assert(std::atomic_compare_exchange_weak(&obj, &x, true) == false);
assert(obj == false);
assert(x == false);
assert(std::atomic_compare_exchange_strong(&obj, &x, true) == true);
assert(obj == true);
assert(x == false);
assert(std::atomic_compare_exchange_strong(&obj, &x, false) == false);
assert(obj == true);
assert(x == true);
assert(std::atomic_compare_exchange_weak_explicit(&obj, &x, false,
std::memory_order_relaxed, std::memory_order_relaxed) == true);
assert(obj == false);
assert(x == true);
assert(std::atomic_compare_exchange_weak_explicit(&obj, &x, true,
std::memory_order_relaxed, std::memory_order_relaxed) == false);
assert(obj == false);
assert(x == false);
assert(std::atomic_compare_exchange_strong_explicit(&obj, &x, true,
std::memory_order_relaxed, std::memory_order_relaxed) == true);
assert(obj == true);
assert(x == false);
assert(std::atomic_compare_exchange_strong_explicit(&obj, &x, false,
std::memory_order_relaxed, std::memory_order_relaxed) == false);
assert(obj == true);
assert(x == true);
assert((obj = false) == false);
assert(obj == false);
}
}

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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <atomic>
// typedef struct atomic_itype
// {
// bool is_lock_free() const volatile;
// bool is_lock_free() const;
// void store(itype, memory_order = memory_order_seq_cst) volatile;
// void store(itype, memory_order = memory_order_seq_cst);
// itype load(memory_order = memory_order_seq_cst) const volatile;
// itype load(memory_order = memory_order_seq_cst) const;
// operator itype() const volatile;
// operator itype() const;
// itype exchange(itype, memory_order = memory_order_seq_cst) volatile;
// itype exchange(itype, memory_order = memory_order_seq_cst);
// bool compare_exchange_weak(itype&, itype, memory_order,
// memory_order) volatile;
// bool compare_exchange_weak(itype&, itype, memory_order, memory_order);
// bool compare_exchange_strong(itype&, itype, memory_order,
// memory_order) volatile;
// bool compare_exchange_strong(itype&, itype, memory_order, memory_order);
// bool compare_exchange_weak(itype&, itype,
// memory_order = memory_order_seq_cst) volatile;
// bool compare_exchange_weak(itype&, itype,
// memory_order = memory_order_seq_cst);
// bool compare_exchange_strong(itype&, itype,
// memory_order = memory_order_seq_cst) volatile;
// bool compare_exchange_strong(itype&, itype,
// memory_order = memory_order_seq_cst);
// itype fetch_add(itype, memory_order = memory_order_seq_cst) volatile;
// itype fetch_add(itype, memory_order = memory_order_seq_cst);
// itype fetch_sub(itype, memory_order = memory_order_seq_cst) volatile;
// itype fetch_sub(itype, memory_order = memory_order_seq_cst);
// itype fetch_and(itype, memory_order = memory_order_seq_cst) volatile;
// itype fetch_and(itype, memory_order = memory_order_seq_cst);
// itype fetch_or(itype, memory_order = memory_order_seq_cst) volatile;
// itype fetch_or(itype, memory_order = memory_order_seq_cst);
// itype fetch_xor(itype, memory_order = memory_order_seq_cst) volatile;
// itype fetch_xor(itype, memory_order = memory_order_seq_cst);
// atomic_itype() = default;
// constexpr atomic_itype(itype);
// atomic_itype(const atomic_itype&) = delete;
// atomic_itype& operator=(const atomic_itype&) = delete;
// atomic_itype& operator=(const atomic_itype&) volatile = delete;
// itype operator=(itype) volatile;
// itype operator=(itype);
// itype operator++(int) volatile;
// itype operator++(int);
// itype operator--(int) volatile;
// itype operator--(int);
// itype operator++() volatile;
// itype operator++();
// itype operator--() volatile;
// itype operator--();
// itype operator+=(itype) volatile;
// itype operator+=(itype);
// itype operator-=(itype) volatile;
// itype operator-=(itype);
// itype operator&=(itype) volatile;
// itype operator&=(itype);
// itype operator|=(itype) volatile;
// itype operator|=(itype);
// itype operator^=(itype) volatile;
// itype operator^=(itype);
// } atomic_itype;
//
// bool atomic_is_lock_free(const volatile atomic_itype*);
// bool atomic_is_lock_free(const atomic_itype*);
// void atomic_init(volatile atomic_itype*, itype);
// void atomic_init(atomic_itype*, itype);
// void atomic_store(volatile atomic_itype*, itype);
// void atomic_store(atomic_itype*, itype);
// void atomic_store_explicit(volatile atomic_itype*, itype, memory_order);
// void atomic_store_explicit(atomic_itype*, itype, memory_order);
// itype atomic_load(const volatile atomic_itype*);
// itype atomic_load(const atomic_itype*);
// itype atomic_load_explicit(const volatile atomic_itype*, memory_order);
// itype atomic_load_explicit(const atomic_itype*, memory_order);
// itype atomic_exchange(volatile atomic_itype*, itype);
// itype atomic_exchange(atomic_itype*, itype);
// itype atomic_exchange_explicit(volatile atomic_itype*, itype, memory_order);
// itype atomic_exchange_explicit(atomic_itype*, itype, memory_order);
// bool atomic_compare_exchange_weak(volatile atomic_itype*, itype*, itype);
// bool atomic_compare_exchange_weak(atomic_itype*, itype*, itype);
// bool atomic_compare_exchange_strong(volatile atomic_itype*, itype*, itype);
// bool atomic_compare_exchange_strong(atomic_itype*, itype*, itype);
// bool atomic_compare_exchange_weak_explicit(volatile atomic_itype*, itype*, itype,
// memory_order, memory_order);
// bool atomic_compare_exchange_weak_explicit(atomic_itype*, itype*, itype,
// memory_order, memory_order);
// bool atomic_compare_exchange_strong_explicit(volatile atomic_itype*, itype*, itype,
// memory_order, memory_order);
// bool atomic_compare_exchange_strong_explicit(atomic_itype*, itype*, itype,
// memory_order, memory_order);
// itype atomic_fetch_add(volatile atomic_itype*, itype);
// itype atomic_fetch_add(atomic_itype*, itype);
// itype atomic_fetch_add_explicit(volatile atomic_itype*, itype, memory_order);
// itype atomic_fetch_add_explicit(atomic_itype*, itype, memory_order);
// itype atomic_fetch_sub(volatile atomic_itype*, itype);
// itype atomic_fetch_sub(atomic_itype*, itype);
// itype atomic_fetch_sub_explicit(volatile atomic_itype*, itype, memory_order);
// itype atomic_fetch_sub_explicit(atomic_itype*, itype, memory_order);
// itype atomic_fetch_and(volatile atomic_itype*, itype);
// itype atomic_fetch_and(atomic_itype*, itype);
// itype atomic_fetch_and_explicit(volatile atomic_itype*, itype, memory_order);
// itype atomic_fetch_and_explicit(atomic_itype*, itype, memory_order);
// itype atomic_fetch_or(volatile atomic_itype*, itype);
// itype atomic_fetch_or(atomic_itype*, itype);
// itype atomic_fetch_or_explicit(volatile atomic_itype*, itype, memory_order);
// itype atomic_fetch_or_explicit(atomic_itype*, itype, memory_order);
// itype atomic_fetch_xor(volatile atomic_itype*, itype);
// itype atomic_fetch_xor(atomic_itype*, itype);
// itype atomic_fetch_xor_explicit(volatile atomic_itype*, itype, memory_order);
// itype atomic_fetch_xor_explicit(atomic_itype*, itype, memory_order);
#include <atomic>
#include <cassert>
template <class A, class T>
void
do_test()
{
A obj(T(0));
assert(obj == T(0));
std::atomic_init(&obj, T(1));
assert(obj == T(1));
std::atomic_init(&obj, T(2));
assert(obj == T(2));
bool b0 = obj.is_lock_free();
obj.store(T(0));
assert(obj == T(0));
obj.store(T(1), std::memory_order_release);
assert(obj == T(1));
assert(obj.load() == T(1));
assert(obj.load(std::memory_order_acquire) == T(1));
assert(obj.exchange(T(2)) == T(1));
assert(obj == T(2));
assert(obj.exchange(T(3), std::memory_order_relaxed) == T(2));
assert(obj == T(3));
T x = obj;
assert(obj.compare_exchange_weak(x, T(2)) == true);
assert(obj == T(2));
assert(x == T(3));
assert(obj.compare_exchange_weak(x, T(1)) == false);
assert(obj == T(2));
assert(x == T(2));
assert(obj.compare_exchange_strong(x, T(1)) == true);
assert(obj == T(1));
assert(x == T(2));
assert(obj.compare_exchange_strong(x, T(0)) == false);
assert(obj == T(1));
assert(x == T(1));
assert((obj = T(0)) == T(0));
assert(obj == T(0));
assert(obj++ == T(0));
assert(obj == T(1));
assert(++obj == T(2));
assert(obj == T(2));
assert(--obj == T(1));
assert(obj == T(1));
assert(obj-- == T(1));
assert(obj == T(0));
obj = T(2);
assert((obj += T(3)) == T(5));
assert(obj == T(5));
assert((obj -= T(3)) == T(2));
assert(obj == T(2));
assert((obj |= T(5)) == T(7));
assert(obj == T(7));
assert((obj &= T(0xF)) == T(7));
assert(obj == T(7));
assert((obj ^= T(0xF)) == T(8));
assert(obj == T(8));
std::atomic_init(&obj, T(1));
assert(obj == T(1));
bool b1 = std::atomic_is_lock_free(&obj);
std::atomic_store(&obj, T(0));
assert(obj == T(0));
std::atomic_store_explicit(&obj, T(1), std::memory_order_release);
assert(obj == T(1));
assert(std::atomic_load(&obj) == T(1));
assert(std::atomic_load_explicit(&obj, std::memory_order_acquire) == T(1));
assert(std::atomic_exchange(&obj, T(2)) == T(1));
assert(obj == T(2));
assert(std::atomic_exchange_explicit(&obj, T(3), std::memory_order_relaxed) == T(2));
assert(obj == T(3));
x = obj;
assert(std::atomic_compare_exchange_weak(&obj, &x, T(2)) == true);
assert(obj == T(2));
assert(x == T(3));
assert(std::atomic_compare_exchange_weak(&obj, &x, T(1)) == false);
assert(obj == T(2));
assert(x == T(2));
assert(std::atomic_compare_exchange_strong(&obj, &x, T(1)) == true);
assert(obj == T(1));
assert(x == T(2));
assert(std::atomic_compare_exchange_strong(&obj, &x, T(0)) == false);
assert(obj == T(1));
assert(x == T(1));
assert(std::atomic_compare_exchange_weak_explicit(&obj, &x, T(2),
std::memory_order_relaxed, std::memory_order_relaxed) == true);
assert(obj == T(2));
assert(x == T(1));
assert(std::atomic_compare_exchange_weak_explicit(&obj, &x, T(3),
std::memory_order_relaxed, std::memory_order_relaxed) == false);
assert(obj == T(2));
assert(x == T(2));
assert(std::atomic_compare_exchange_strong_explicit(&obj, &x, T(3),
std::memory_order_relaxed, std::memory_order_relaxed) == true);
assert(obj == T(3));
assert(x == T(2));
assert(std::atomic_compare_exchange_strong_explicit(&obj, &x, T(0),
std::memory_order_relaxed, std::memory_order_relaxed) == false);
assert(obj == T(3));
assert(x == T(3));
assert((obj = T(1)) == T(1));
assert(obj == T(1));
obj = T(2);
assert(std::atomic_fetch_add(&obj, T(3)) == T(2));
assert(obj == T(5));
assert(std::atomic_fetch_add_explicit(&obj, T(3), std::memory_order_seq_cst) == T(5));
assert(obj == T(8));
assert(std::atomic_fetch_sub(&obj, T(3)) == T(8));
assert(obj == T(5));
assert(std::atomic_fetch_sub_explicit(&obj, T(3), std::memory_order_seq_cst) == T(5));
assert(obj == T(2));
assert(std::atomic_fetch_or(&obj, T(5)) == T(2));
assert(obj == T(7));
assert(std::atomic_fetch_or_explicit(&obj, T(8), std::memory_order_seq_cst) == T(7));
assert(obj == T(0xF));
assert(std::atomic_fetch_and(&obj, T(7)) == T(0xF));
assert(obj == T(7));
assert(std::atomic_fetch_and_explicit(&obj, T(3), std::memory_order_seq_cst) == T(7));
assert(obj == T(3));
assert(std::atomic_fetch_xor(&obj, T(7)) == T(3));
assert(obj == T(4));
assert(std::atomic_fetch_xor_explicit(&obj, T(7), std::memory_order_seq_cst) == T(4));
assert(obj == T(3));
}
template <class A, class T>
void test()
{
do_test<A, T>();
do_test<volatile A, T>();
}
int main()
{
test<std::atomic_char, char>();
test<std::atomic_schar, signed char>();
test<std::atomic_uchar, unsigned char>();
test<std::atomic_short, short>();
test<std::atomic_ushort, unsigned short>();
test<std::atomic_int, int>();
test<std::atomic_uint, unsigned int>();
test<std::atomic_long, long>();
test<std::atomic_ulong, unsigned long>();
test<std::atomic_llong, long long>();
test<std::atomic_ullong, unsigned long long>();
#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
test<std::atomic_char16_t, char16_t>();
test<std::atomic_char32_t, char32_t>();
#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
test<std::atomic_wchar_t, wchar_t>();
}

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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <atomic>
// template <class T>
// struct atomic
// {
// bool is_lock_free() const volatile;
// bool is_lock_free() const;
// void store(T desr, memory_order m = memory_order_seq_cst) volatile;
// void store(T desr, memory_order m = memory_order_seq_cst);
// T load(memory_order m = memory_order_seq_cst) const volatile;
// T load(memory_order m = memory_order_seq_cst) const;
// operator T() const volatile;
// operator T() const;
// T exchange(T desr, memory_order m = memory_order_seq_cst) volatile;
// T exchange(T desr, memory_order m = memory_order_seq_cst);
// bool compare_exchange_weak(T& expc, T desr,
// memory_order s, memory_order f) volatile;
// bool compare_exchange_weak(T& expc, T desr, memory_order s, memory_order f);
// bool compare_exchange_strong(T& expc, T desr,
// memory_order s, memory_order f) volatile;
// bool compare_exchange_strong(T& expc, T desr,
// memory_order s, memory_order f);
// bool compare_exchange_weak(T& expc, T desr,
// memory_order m = memory_order_seq_cst) volatile;
// bool compare_exchange_weak(T& expc, T desr,
// memory_order m = memory_order_seq_cst);
// bool compare_exchange_strong(T& expc, T desr,
// memory_order m = memory_order_seq_cst) volatile;
// bool compare_exchange_strong(T& expc, T desr,
// memory_order m = memory_order_seq_cst);
//
// atomic() = default;
// constexpr atomic(T desr);
// atomic(const atomic&) = delete;
// atomic& operator=(const atomic&) = delete;
// atomic& operator=(const atomic&) volatile = delete;
// T operator=(T) volatile;
// T operator=(T);
// };
#include <atomic>
#include <cassert>
int main()
{
{
volatile std::atomic<bool> _;
volatile std::atomic<bool> obj(true);
assert(obj == true);
std::atomic_init(&obj, false);
assert(obj == false);
std::atomic_init(&obj, true);
assert(obj == true);
bool b0 = obj.is_lock_free();
obj.store(false);
assert(obj == false);
obj.store(true, std::memory_order_release);
assert(obj == true);
assert(obj.load() == true);
assert(obj.load(std::memory_order_acquire) == true);
assert(obj.exchange(false) == true);
assert(obj == false);
assert(obj.exchange(true, std::memory_order_relaxed) == false);
assert(obj == true);
bool x = obj;
assert(obj.compare_exchange_weak(x, false) == true);
assert(obj == false);
assert(x == true);
assert(obj.compare_exchange_weak(x, true,
std::memory_order_seq_cst) == false);
assert(obj == false);
assert(x == true);
obj.store(true);
assert(obj.compare_exchange_weak(x, false,
std::memory_order_seq_cst,
std::memory_order_seq_cst) == true);
assert(obj == false);
assert(x == true);
x = true;
obj.store(true);
assert(obj.compare_exchange_strong(x, false) == true);
assert(obj == false);
assert(x == true);
assert(obj.compare_exchange_strong(x, true,
std::memory_order_seq_cst) == false);
assert(obj == false);
assert(x == true);
x = true;
obj.store(true);
assert(obj.compare_exchange_strong(x, false,
std::memory_order_seq_cst,
std::memory_order_seq_cst) == true);
assert(obj == false);
assert(x == true);
assert((obj = false) == false);
assert(obj == false);
assert((obj = true) == true);
assert(obj == true);
}
{
std::atomic<bool> _;
std::atomic<bool> obj(true);
assert(obj == true);
std::atomic_init(&obj, false);
assert(obj == false);
std::atomic_init(&obj, true);
assert(obj == true);
bool b0 = obj.is_lock_free();
obj.store(false);
assert(obj == false);
obj.store(true, std::memory_order_release);
assert(obj == true);
assert(obj.load() == true);
assert(obj.load(std::memory_order_acquire) == true);
assert(obj.exchange(false) == true);
assert(obj == false);
assert(obj.exchange(true, std::memory_order_relaxed) == false);
assert(obj == true);
bool x = obj;
assert(obj.compare_exchange_weak(x, false) == true);
assert(obj == false);
assert(x == true);
assert(obj.compare_exchange_weak(x, true,
std::memory_order_seq_cst) == false);
assert(obj == false);
assert(x == true);
obj.store(true);
assert(obj.compare_exchange_weak(x, false,
std::memory_order_seq_cst,
std::memory_order_seq_cst) == true);
assert(obj == false);
assert(x == true);
x = true;
obj.store(true);
assert(obj.compare_exchange_strong(x, false) == true);
assert(obj == false);
assert(x == true);
assert(obj.compare_exchange_strong(x, true,
std::memory_order_seq_cst) == false);
assert(obj == false);
assert(x == true);
x = true;
obj.store(true);
assert(obj.compare_exchange_strong(x, false,
std::memory_order_seq_cst,
std::memory_order_seq_cst) == true);
assert(obj == false);
assert(x == true);
assert((obj = false) == false);
assert(obj == false);
assert((obj = true) == true);
assert(obj == true);
}
}

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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <atomic>
// template <>
// struct atomic<integral>
// {
// bool is_lock_free() const volatile;
// bool is_lock_free() const;
// void store(integral desr, memory_order m = memory_order_seq_cst) volatile;
// void store(integral desr, memory_order m = memory_order_seq_cst);
// integral load(memory_order m = memory_order_seq_cst) const volatile;
// integral load(memory_order m = memory_order_seq_cst) const;
// operator integral() const volatile;
// operator integral() const;
// integral exchange(integral desr,
// memory_order m = memory_order_seq_cst) volatile;
// integral exchange(integral desr, memory_order m = memory_order_seq_cst);
// bool compare_exchange_weak(integral& expc, integral desr,
// memory_order s, memory_order f) volatile;
// bool compare_exchange_weak(integral& expc, integral desr,
// memory_order s, memory_order f);
// bool compare_exchange_strong(integral& expc, integral desr,
// memory_order s, memory_order f) volatile;
// bool compare_exchange_strong(integral& expc, integral desr,
// memory_order s, memory_order f);
// bool compare_exchange_weak(integral& expc, integral desr,
// memory_order m = memory_order_seq_cst) volatile;
// bool compare_exchange_weak(integral& expc, integral desr,
// memory_order m = memory_order_seq_cst);
// bool compare_exchange_strong(integral& expc, integral desr,
// memory_order m = memory_order_seq_cst) volatile;
// bool compare_exchange_strong(integral& expc, integral desr,
// memory_order m = memory_order_seq_cst);
//
// integral
// fetch_add(integral op, memory_order m = memory_order_seq_cst) volatile;
// integral fetch_add(integral op, memory_order m = memory_order_seq_cst);
// integral
// fetch_sub(integral op, memory_order m = memory_order_seq_cst) volatile;
// integral fetch_sub(integral op, memory_order m = memory_order_seq_cst);
// integral
// fetch_and(integral op, memory_order m = memory_order_seq_cst) volatile;
// integral fetch_and(integral op, memory_order m = memory_order_seq_cst);
// integral
// fetch_or(integral op, memory_order m = memory_order_seq_cst) volatile;
// integral fetch_or(integral op, memory_order m = memory_order_seq_cst);
// integral
// fetch_xor(integral op, memory_order m = memory_order_seq_cst) volatile;
// integral fetch_xor(integral op, memory_order m = memory_order_seq_cst);
//
// atomic() = default;
// constexpr atomic(integral desr);
// atomic(const atomic&) = delete;
// atomic& operator=(const atomic&) = delete;
// atomic& operator=(const atomic&) volatile = delete;
// integral operator=(integral desr) volatile;
// integral operator=(integral desr);
//
// integral operator++(int) volatile;
// integral operator++(int);
// integral operator--(int) volatile;
// integral operator--(int);
// integral operator++() volatile;
// integral operator++();
// integral operator--() volatile;
// integral operator--();
// integral operator+=(integral op) volatile;
// integral operator+=(integral op);
// integral operator-=(integral op) volatile;
// integral operator-=(integral op);
// integral operator&=(integral op) volatile;
// integral operator&=(integral op);
// integral operator|=(integral op) volatile;
// integral operator|=(integral op);
// integral operator^=(integral op) volatile;
// integral operator^=(integral op);
// };
#include <atomic>
#include <cassert>
template <class A, class T>
void
do_test()
{
A obj(T(0));
assert(obj == T(0));
std::atomic_init(&obj, T(1));
assert(obj == T(1));
std::atomic_init(&obj, T(2));
assert(obj == T(2));
bool b0 = obj.is_lock_free();
obj.store(T(0));
assert(obj == T(0));
obj.store(T(1), std::memory_order_release);
assert(obj == T(1));
assert(obj.load() == T(1));
assert(obj.load(std::memory_order_acquire) == T(1));
assert(obj.exchange(T(2)) == T(1));
assert(obj == T(2));
assert(obj.exchange(T(3), std::memory_order_relaxed) == T(2));
assert(obj == T(3));
T x = obj;
assert(obj.compare_exchange_weak(x, T(2)) == true);
assert(obj == T(2));
assert(x == T(3));
assert(obj.compare_exchange_weak(x, T(1)) == false);
assert(obj == T(2));
assert(x == T(1));
x = T(2);
assert(obj.compare_exchange_strong(x, T(1)) == true);
assert(obj == T(1));
assert(x == T(2));
assert(obj.compare_exchange_strong(x, T(0)) == false);
assert(obj == T(1));
assert(x == T(0));
assert((obj = T(0)) == T(0));
assert(obj == T(0));
assert(obj++ == T(0));
assert(obj == T(1));
assert(++obj == T(2));
assert(obj == T(2));
assert(--obj == T(1));
assert(obj == T(1));
assert(obj-- == T(1));
assert(obj == T(0));
obj = T(2);
assert((obj += T(3)) == T(5));
assert(obj == T(5));
assert((obj -= T(3)) == T(2));
assert(obj == T(2));
assert((obj |= T(5)) == T(7));
assert(obj == T(7));
assert((obj &= T(0xF)) == T(7));
assert(obj == T(7));
assert((obj ^= T(0xF)) == T(8));
assert(obj == T(8));
}
template <class A, class T>
void test()
{
do_test<A, T>();
do_test<volatile A, T>();
}
int main()
{
test<std::atomic_char, char>();
test<std::atomic_schar, signed char>();
test<std::atomic_uchar, unsigned char>();
test<std::atomic_short, short>();
test<std::atomic_ushort, unsigned short>();
test<std::atomic_int, int>();
test<std::atomic_uint, unsigned int>();
test<std::atomic_long, long>();
test<std::atomic_ulong, unsigned long>();
test<std::atomic_llong, long long>();
test<std::atomic_ullong, unsigned long long>();
#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
test<std::atomic_char16_t, char16_t>();
test<std::atomic_char32_t, char32_t>();
#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
test<std::atomic_wchar_t, wchar_t>();
test<volatile std::atomic_char, char>();
test<volatile std::atomic_schar, signed char>();
test<volatile std::atomic_uchar, unsigned char>();
test<volatile std::atomic_short, short>();
test<volatile std::atomic_ushort, unsigned short>();
test<volatile std::atomic_int, int>();
test<volatile std::atomic_uint, unsigned int>();
test<volatile std::atomic_long, long>();
test<volatile std::atomic_ulong, unsigned long>();
test<volatile std::atomic_llong, long long>();
test<volatile std::atomic_ullong, unsigned long long>();
#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
test<volatile std::atomic_char16_t, char16_t>();
test<volatile std::atomic_char32_t, char32_t>();
#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
test<volatile std::atomic_wchar_t, wchar_t>();
}

13
test/atomics/atomics.types.generic/nothing_to_do.pass.cpp
View File

@ -1,13 +0,0 @@
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
int main()
{
}