Comments (3)
jakelishman
commented on August 19, 2024
1
This looks severely like a bug in the QPY serialisation/deserialisation - on close inspection, the UUIDs for the read parameters are offset by two bytes compared to the inputs. I'm not entirely sure how that's managed to happen without completely failing all tests, but there we are. I'll look into getting it fixed in Terra ASAP, and then look to release a 0.19.2.
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daka1510
commented on August 19, 2024
@mtreinish, @jakelishman - do you happen to know how to properly fix this? Do we need to update the encoder/decoder code?
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jakelishman
commented on August 19, 2024
Ah no, sorry - I'm wrong. In this case it's that you're using an old version of the parameter expression unpacking. There was a new QPY serialisation format, and since you're using internal functions of qpy_serialization, there wasn't any stability there. The new v3 format has an extra byte in the ParameterExpression header in the QPY format, and an extra byte in the map elements. So when your parameter expressions only had one parameter in them, that's where the extra two bytes came from.
This is possible to fix, but I think you'll have to detect the version of Terra, because you need to know whether to set your reader to _read_parameter_expression or _read_parameter_expression_v3. I'll make a PR for you.
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