Denis.Zharkov
7e4d9d9f64
Many of them have been found & minimized at FP tests/user projects ^KT-59791 Fixed
32 lines
1.1 KiB
Kotlin
Vendored
32 lines
1.1 KiB
Kotlin
Vendored
class Controller<T> {
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fun yield(t: T): Boolean = true
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}
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fun <S> generate(g: suspend Controller<S>.() -> Unit): S = TODO()
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fun <E4> select(x: E4, y: E4) {}
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fun <E5> selectL(x: E5, y: E5, l: (E5) -> Unit) {}
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fun main(x: Controller<String>) {
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generate {
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// Just adding the constraints
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// Controller<String> <: E4
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// Controller<S> <: E4
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// No fixation is required
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select(x, this)
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}.length
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generate {
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// Adding the constraints
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// Controller<String> <: E5
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// Controller<S> <: E5
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// But to analyze lambda we fix E5 to CST(Controller<String>, Controller<S>) = Controller<CST(String, S)>
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// The question is what is CST(String, S)
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// And current answer in K2 is that it's String just the same way as when while fixating some TV, it has improper lower constraits
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// See org.jetbrains.kotlin.resolve.calls.inference.components.ResultTypeResolver.prepareLowerConstraints
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selectL(x, this) { x ->
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x.yield(<!CONSTANT_EXPECTED_TYPE_MISMATCH!>1<!>)
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x.yield(<!TYPE_MISMATCH!>""<!>)
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}
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}.length
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} |