From 90a4981e0951687056ec4735cfd3043b35a23502 Mon Sep 17 00:00:00 2001 From: Thomas Rodgers Date: Thu, 16 Sep 2021 14:42:58 -0700 Subject: [PATCH] libstdc++: Fix UB in atomic_ref/wait_notify.cc [PR101761] Remove UB in atomic_ref/wait_notify test. Signed-off-by: Thomas Rodgers libstdc++-v3/ChangeLog: PR libstdc++/101761 * testsuite/29_atomics/atomic_ref/wait_notify.cc (test): Use va and vb as arguments to wait/notify, remove unused bb local. (cherry picked from commit f9f1a6efaaeeec06d5c07378734cb8eb47b976a7) --- .../testsuite/29_atomics/atomic_ref/wait_notify.cc | 7 +++---- 1 file changed, 3 insertions(+), 4 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 b75e27617f77..b41d1ac0bb70 100644 --- a/libstdc++-v3/testsuite/29_atomics/atomic_ref/wait_notify.cc +++ b/libstdc++-v3/testsuite/29_atomics/atomic_ref/wait_notify.cc @@ -33,15 +33,14 @@ template if constexpr (std::atomic_ref::is_always_lock_free) { S aa{ va }; - S bb{ vb }; std::atomic_ref a{ aa }; - a.wait(bb); + a.wait(vb); std::thread t([&] { - a.store(bb); + a.store(vb); a.notify_one(); }); - a.wait(aa); + a.wait(va); t.join(); } } -- 2.47.2