Avoid truncating unknown types in SDO upload (fixes #436) #591
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When an OD entry is found in SdoClient.upload(), the truncation is currently skipped only for those types explicitly listed as variable length data (domain, strings). That causes unknown types to be truncated to whatever their length indicates, which is usually one byte. Invert the condition to check all types with an explicitly known size, a.k.a. those listed in STRUCT_TYPES where the required length can be deduced from the structure format. Re-enable the unit tests which were skipped based on the previously buggy behavior.
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This is an efficient fix. |
This was referenced Jun 15, 2025
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Does that mean PR approval? |
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When an OD entry is found in
SdoClient.upload(), the truncation is currently skipped only for those types explicitly listed as variable length data (domain, strings). That causes unknown types to be truncated to whatever their length indicates, which is usually one byte.Invert the condition to check all types with an explicitly known size, a.k.a. those listed in STRUCT_TYPES where the required length can be deduced from the structure format. Factor out the condition to a new
fixed_sizeproperty, which is easier to override when adding custom data types.Re-enable the unit tests which were skipped based on the previously buggy behavior.