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[CSApply] Result coercion check should always use resolved type #41108

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Feb 1, 2022
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2 changes: 1 addition & 1 deletion lib/Sema/CSApply.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -8802,7 +8802,7 @@ ExprWalker::rewriteTarget(SolutionApplicationTarget target) {
return convertType &&
!convertType->hasPlaceholder() &&
!target.isOptionalSomePatternInit() &&
!(solution.getType(resultExpr)->isUninhabited() &&
!(solution.getResolvedType(resultExpr)->isUninhabited() &&
cs.getContextualTypePurpose(target.getAsExpr())
== CTP_ReturnSingleExpr);
};
Expand Down
Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
// RUN: %target-typecheck-verify-swift

struct S {
func crash() -> Never {
fatalError("")
}
}

class A {
func value() -> Int { 42 }
}

class B : A {
let value: S = S()

func test() throws -> B {
value.crash() // Ok
}
}