Alexis Laferrière f2d1627656 [Serialization] Fix deserializing opaque types for computed properties and subscripts ...

A client shouldn't know about the underlying type of an opaque type
unless it can see the body of the naming decl. Attempting to read it can
lead to accessing a hidden dependency and a compiler crash.

This was protected by a check specific to function decls but var decls
and subscripts were not handled. To support them we have to move this
logic to the writer side where we have access to the full
AbstractStorageDecl and write in the swifmodule whether the underlying
type should be visible outside of the module.

rdar://117607906

2023-11-01 16:04:10 -07:00

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