[libcxx-commits] [libcxx] [libc++] Save duration/timeout locally for condition_variable waits (PR #148330)

[Jonathan Wakely via libcxx-commits]

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@@ -188,9 +188,10 @@ public:
   _LIBCPP_HIDE_FROM_ABI cv_status wait_until(_Lock& __lock, const chrono::time_point<_Clock, _Duration>& __t) {
     shared_ptr<mutex> __mut = __mut_;
     unique_lock<mutex> __lk(*__mut);
+    const chrono::time_point<_Clock, _Duration> __t_local = __t;
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jwakely wrote:

A program-defined rep type can observe a copy, but it can't tell whether it happens when initializing the function argument or inside the function.

https://github.com/llvm/llvm-project/pull/148330