[CodeCompletion] Fix a crash in collectPossibleReturnTypesFromContext #34486
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Avoid re-typechecking for nested closures. For example:
Something {
Other {
#^COMPLETE^#
}
}
If 'Something' is successfully type checked but 'Other' is failed, the
outer closure has type, but the inner closure doesn't. In such state,
when the type of 'Other' is requested, the outer closure used to be
re-typechecked. That may cause crash because it may contain expressions
CSGen doesn't expect.
rdar://problem/69246891
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Avoid re-typechecking for nested closures. For example:
If
Somethingis successfully type checked butOtheris failed, the outer closure has type, but the inner closure doesn't. In such state, when the type ofOtheris requested, the outer closure used to be re-typechecked. That may cause a crash because it may contain expressions CSGen doesn't expect.rdar://problem/69246891