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Add limitations section to Linking.md to clarify element and data segment indices renumbering is not supported (#193) #194

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Dec 6, 2022
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Add limitations section to Linking.md to clarify element and data segment indices renumbering is not supported (#193) #194

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10 changes: 9 additions & 1 deletion Linking.md
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,7 @@ tasks need to be performed:
- Merging of globals sections (re-numbering globals)
- Merging of event sections (re-numbering events)
- Merging of table sections (re-numbering tables)
- Merging of data segments (re-positioning data)
- Merging of data segments (re-positioning data with [limitations](#limitations))
- Resolving undefined external references
- Synthesizing functions to call constructors and perform other initialization

Expand Down Expand Up @@ -686,3 +686,11 @@ have its address computed as follows:

The variable can then be used as normal. Upon thread exit, the runtime should free
the memory allocated for the TLS block.

### Limitations

- There is currently no support for passive data segments. The relocation types
necessary for referencing such segments (e.g. in `data.drop` or `memory.init`
instruction) do not yet exist.
- There is currently no support for table element segments, either active or
passive.