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Calling the placement version of ::operator new "implicitly creates objects in the returned region of storage" as per [intro.object]. This allows the returned memory to be used as storage for implicit-lifetime types (including arrays) without additional action by the caller. This is required by the proposed resolution of LWG 3147. libstdc++-v3/ChangeLog: * include/std/memory_resource (memory_resource::allocate): Implicitly create objects in the returned storage.
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