microsoft / microsoft/ifc-spec
TypeSort::Placeholder has surprising interior padding following "basis"
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Description
The IFC spec describes TypeSort::Placeholder as:
|-------------|-----------------------------|
| Name | Type |
|-------------|-----------------------------|
| constraint | ExprIndex |
| basis | TypeBasis |
| elaboration | TypeIndex |
|-------------|-----------------------------|
The true representation is:
|-------------|-----------------------------|
| Name | Type |
|-------------|-----------------------------|
| constraint | ExprIndex |
| basis | TypeBasis |
| __pading__ | uint8[3] |
| elaboration | TypeIndex |
|-------------|-----------------------------|
Ideally, this would be as follows to match other cases of padding in the IFC spec:
|-------------|-----------------------------|
| Name | Type |
|-------------|-----------------------------|
| constraint | ExprIndex |
| basis | TypeBasis |
| elaboration | TypeIndex |
| __pading__ | uint8[3] |
|-------------|-----------------------------|
At a minimum, this padding should be documented in the spec.
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
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Research direction
No file or test is named in the issue. Start by locating the TypeSort::Placeholder definition in the IFC specification and compare its padding order with the reported representation. Done means either matching the documented field order to the desired layout or documenting the existing uint8[3] padding.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- tex
- Domain
- documentation
- Issue type
- Documentation
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100