[ty] Have SemanticIndex::place_table()
and SemanticIndex::use_def_map
return references
#19944
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Summary
The fact that these return owned
Arc
s has already caused a number of borrow-checker issues that have been annoying to workaround. And I just ran into this yet again while working on another change.Everything seems to compile if we return
&Arc
from these methods rather thanArc
, and (since the implicit lifetime of the borrow is'db
) this solves a lot of borrow-checker issues!Test Plan
Existing tests