[NI] Fix common supertype of types with error supertypes

Enable check for error supertypes during CST calculation in classic type system context.
Cyclic upper bound + known type parameters of superclasses may create non-error types
with error supertypes. Such types don't have common constructors with other normal types
and cause assertion errors during intersection.

^KT-36951 Fixed
This commit is contained in:
Pavel Kirpichenkov
2020-07-20 14:05:58 +03:00
parent 95cc35f22e
commit 710659324c
14 changed files with 127 additions and 5 deletions
@@ -0,0 +1,15 @@
// !LANGUAGE: +NewInference
// !DIAGNOSTICS: -UNUSED_PARAMETER
interface Foo<F> {
fun getSum(): F = TODO()
}
fun <S> select(vararg args: S): S = TODO()
class Bar<B : B> : Foo<B> {
val v = <!DEBUG_INFO_EXPRESSION_TYPE("B?")!>select(
getSum(),
42
)<!>
}
@@ -0,0 +1,15 @@
// !LANGUAGE: +NewInference
// !DIAGNOSTICS: -UNUSED_PARAMETER
interface Foo<F> {
fun getSum(): F = TODO()
}
fun <S> select(vararg args: S): S = TODO()
class Bar<B : <!CYCLIC_GENERIC_UPPER_BOUND!>B<!>> : Foo<B> {
val v = <!DEBUG_INFO_EXPRESSION_TYPE("[ERROR : from type constructor([ERROR : Cyclic upper bounds])]")!>select(
<!DEBUG_INFO_LEAKING_THIS!>getSum<!>(),
42
)<!>
}
@@ -0,0 +1,19 @@
package
public fun </*0*/ S> select(/*0*/ vararg args: S /*kotlin.Array<out S>*/): S
public final class Bar</*0*/ B : [ERROR : Cyclic upper bounds]> : Foo<B> {
public constructor Bar</*0*/ B : [ERROR : Cyclic upper bounds]>()
public final val v: [ERROR : from type constructor([ERROR : Cyclic upper bounds])]
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun getSum(): B
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}
public interface Foo</*0*/ F> {
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open fun getSum(): F
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}