Denis.Zharkov
41933facbb
See the test data. ISE happened because at some point after incomplete `getValue` resolution of `a` property, we updated in the `transformAccessors` the property type to the `Variable(Y)` type and then used it as a 3rd argument for `setValue` call which is incorrect because the variable belongs to a different constraint system (from `getValue`). Mostly, the fix is just a repeating K1 behavior, namely postponing `setValue` resolution until delegate inference is completed. ^KT-59066 Fixed
24 lines
869 B
Kotlin
Vendored
24 lines
869 B
Kotlin
Vendored
import kotlin.reflect.KProperty
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// Definitions
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class M<E>
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operator fun <X> M<out X>.getValue(thisRef: Any?, property: KProperty<*>): String = "value"
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operator fun <Z> M<in Z>.setValue(thisRef: Any?, property: KProperty<*>, value: Z) {}
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fun <U> m(): M<U> = M()
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// We don't allow to infer type of a delegate expression through a setValue, where the argument (value) is constrained by the return type of a getValue
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var a by <!DELEGATE_SPECIAL_FUNCTION_NONE_APPLICABLE, DELEGATE_SPECIAL_FUNCTION_NONE_APPLICABLE!><!NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>m<!>()<!>
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// We infer type of delegate expression through a setValue from the explicit property type
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var b: String by m()
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fun takeString(v: String) {}
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fun main() {
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takeString(<!DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>a<!>)
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<!DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>a<!> = "a"
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takeString(b)
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b = "b"
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} |