[libc++] atomic_wait uses UL_COMPARE_AND_WAIT when it should use UL_COMPARE_AND_WAIT64 on Darwin #85107
Description
UL_COMPARE_AND_WAIT assumes a 32 bit value, but we're pointing to a contention_t which is a 64 bit value.
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UL_COMPARE_AND_WAIT assumes a 32 bit value, but we're pointing to a contention_t which is a 64 bit value.