Fix init of device_scalars - #2503
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Zeroed with a device memset. The device_scalar(value, stream) ctor would copy from a host temporary that dies before the copy is guaranteed to have read it.
Unrelated but same type of bug (found by AI).
bdice
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Aug 25, 2026
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Zeroed with a device memset. The
device_scalar(value, stream)ctor would copy from a host temporary that dies before the copy is guaranteed to have read it. So the value ends up being something random.xref rapidsai/rmm#2526 NVIDIA/cuml#8510