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Refine subtyping check: pay attention to corresponding supertype nullability

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F: Any, T : F? => !isSubtype(T, Any)

It helps to identify upper bounds violation like in KT-7455

 #KT-7455 Fixed
 #KT-2924 Fixed
 #KT-3015 Fixed
This commit is contained in:
Denis Zharkov
2015-08-26 11:22:40 +03:00
parent a906be6dd7
commit 6ecfa6e985
11 changed files with 184 additions and 3 deletions
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compiler/testData/diagnostics/tests/generics/nullability/declarationsBoundsViolation.txt
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package
internal fun </*0*/ X : kotlin.CharSequence, /*1*/ Y1 : X, /*2*/ Y2 : Y1?> foo(/*0*/ a: A<X>, /*1*/ b: A<Y1>, /*2*/ c: A<Y2>): kotlin.Unit
internal fun </*0*/ S : kotlin.CharSequence?> foo1(/*0*/ a: A<S>): kotlin.Unit
internal interface A</*0*/ T : kotlin.CharSequence> {
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}
internal final class B1</*0*/ E : kotlin.String?> : A<E> {
public constructor B1</*0*/ E : kotlin.String?>()
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}
internal final class B2</*0*/ E : kotlin.CharSequence?> : A<E> {
public constructor B2</*0*/ E : kotlin.CharSequence?>()
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}
internal final class B3</*0*/ E> : A<E> {
public constructor B3</*0*/ E>()
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}
internal final class B4</*0*/ E : kotlin.CharSequence> : A<E> {
public constructor B4</*0*/ E : kotlin.CharSequence>()
public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
}