Message ID | 20220426122429.2075326-1-jwakely@redhat.com |
---|---|
State | New |
Headers | show |
Series | [committed] libstdc++: Add std::atomic<shared_ptr>(nullptr_t) constructor (LWG 3661) | expand |
diff --git a/libstdc++-v3/include/bits/shared_ptr_atomic.h b/libstdc++-v3/include/bits/shared_ptr_atomic.h index 9e4df7da7f8..ff86432f0b4 100644 --- a/libstdc++-v3/include/bits/shared_ptr_atomic.h +++ b/libstdc++-v3/include/bits/shared_ptr_atomic.h @@ -573,6 +573,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION constexpr atomic() noexcept = default; + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // 3661. constinit atomic<shared_ptr<T>> a(nullptr); should work + constexpr atomic(nullptr_t) noexcept : atomic() { } + atomic(shared_ptr<_Tp> __r) noexcept : _M_impl(std::move(__r)) { } diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc index 1f97224bf6a..a1902745a3e 100644 --- a/libstdc++-v3/testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc +++ b/libstdc++-v3/testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc @@ -18,6 +18,8 @@ // Check constexpr constructor. constinit std::atomic<std::shared_ptr<int>> a; +// LWG 3661. constinit atomic<shared_ptr<T>> a(nullptr); should work +constinit std::atomic<std::shared_ptr<int>> a2 = nullptr; void test_is_lock_free()