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| author | Thomas Rodgers <rodgert@appliantology.com> | 2021-06-09 13:44:31 -0700 |
|---|---|---|
| committer | Thomas Rodgers <rodgert@appliantology.com> | 2021-06-09 13:46:03 -0700 |
| commit | eb3a3bb8ce4ce2420919d03a3e9f9a2a4297c4d3 (patch) | |
| tree | 9b54b10907c204d74f388de8c813a84420cf7832 | |
| parent | d4faa36e7540c573c5dc17850bcd938d0900b2e9 (diff) | |
| download | gcc-eb3a3bb8ce4ce2420919d03a3e9f9a2a4297c4d3.zip gcc-eb3a3bb8ce4ce2420919d03a3e9f9a2a4297c4d3.tar.gz gcc-eb3a3bb8ce4ce2420919d03a3e9f9a2a4297c4d3.tar.bz2 | |
libstd++: Only support atomic_ref::wait tests which are always lockfree
Fixes a regression on arm32 targets.
libstdc++-v3/ChangeLog:
* testsuite/29_atomics/atomic_ref/wait_notify.cc: Guard
test logic with constexpr check for is_always_lock_free.
| -rw-r--r-- | libstdc++-v3/testsuite/29_atomics/atomic_ref/wait_notify.cc | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/libstdc++-v3/testsuite/29_atomics/atomic_ref/wait_notify.cc b/libstdc++-v3/testsuite/29_atomics/atomic_ref/wait_notify.cc index 003b86c..b75e276 100644 --- a/libstdc++-v3/testsuite/29_atomics/atomic_ref/wait_notify.cc +++ b/libstdc++-v3/testsuite/29_atomics/atomic_ref/wait_notify.cc @@ -30,17 +30,20 @@ template<typename S> void test (S va, S vb) { - S aa{ va }; - S bb{ vb }; - std::atomic_ref<S> a{ aa }; - a.wait(bb); - std::thread t([&] - { - a.store(bb); - a.notify_one(); - }); - a.wait(aa); - t.join(); + if constexpr (std::atomic_ref<S>::is_always_lock_free) + { + S aa{ va }; + S bb{ vb }; + std::atomic_ref<S> a{ aa }; + a.wait(bb); + std::thread t([&] + { + a.store(bb); + a.notify_one(); + }); + a.wait(aa); + t.join(); + } } int |