[5.0][CSDiagnostics] Diagnose invalid optional unwrap via fixes #21124
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If the base type is not optional, trying to unwrap it is incorrect. Introduce a fix to make it look like base was an optional type which leads solver to move forward towards possible solution. (cherry picked from commit e043e2b)
Detect and fix situations when (force) unwrap is used on a non-optional type, this helps to diagnose invalid unwraps precisely and provide fix-its. Resolves: [SR-8977](https://bugs.swift.org/browse/SR-8977) Resolves: rdar://problem/45218255 (cherry picked from commit 202234f)
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@swift-ci please test |
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@swift-ci please test source compatibility |
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Just FYI that this code is not going to run when everything type-checks correctly. |
AnnaZaks
approved these changes
Dec 8, 2018
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Detect and fix situations when (force) unwrap is used on
a non-optional type, this helps to diagnose invalid unwraps
precisely and provide fix-its.
Resolves: SR-8977
Resolves: rdar://problem/45218255