Pavel Yaskevich 89c104b709 [QoI] Improve diagnostics for subscript with invalid index arguments ...

In `FailureDiagnosis::visitSubscriptExpr` if there is only a single
candidate available, verify that the problem is actually related
to the contextual mismatch by type-checking whole subscript without
contextual info, if that returns a type - it's contextual, otherwise
diagnose as incorrect argument type problem.

Resolves: rdar://problem/31977679

2017-05-21 21:56:43 -07:00

3.3 KiB

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