[5.9] Sema: Fix incorrect assert in TypeCheckProtocol.cpp. #65679
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We can't assume that we will always find a viable witness for a protocol requirement when typechecking a `.swiftinterface` file. The assert that assumed there would be a match could fail when building a broken interface or building a valid interface with a broken SDK, causing crashes instead of emitting diagnostics. Resolves rdar://108688535
hborla
approved these changes
May 5, 2023
tshortli
changed the title
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@swift-ci please test |
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Cherry pick of #65667
We can't assume that we will always find a viable witness for a protocol requirement when typechecking a
.swiftinterfacefile. The assert that assumed there would be a match could fail when building a broken interface or building a valid interface with a broken SDK, causing crashes instead of emitting diagnostics.Resolves rdar://108688535