Allow type variable fixation into intersection type if it isn't meaningless (i.e. has one or more final classes, or two or more open classes)

^KT-46186 Fixed
2021-04-20 14:41:13 +03:00
parent 310d98c4f7
commit 867d7b5bca
10 changed files with 312 additions and 4 deletions
@@ -0,0 +1,83 @@
+// !DIAGNOSTICS: -FINAL_UPPER_BOUND -CAST_NEVER_SUCCEEDS
+
+interface I
+
+class View1
+open class View2
+interface View3
+abstract class View4
+interface View5
+
+fun <T: View1> findViewById1(): T = null as T
+fun test1(): I = findViewById1()
+
+fun <T: View2> findViewById2(): T = null as T
+fun test2(): I = findViewById2()
+
+inline fun <reified T: View1> findViewById3(): T = null as T
+fun test3(): I = findViewById3()
+
+inline fun <reified T: View2> findViewById4(): T = null as T
+fun test4(): I = findViewById4()
+
+fun <T: View3> findViewById5(): T = null as T
+fun test5(): I = findViewById5()
+
+inline fun <reified T: View3> findViewById6(): T = null as T
+fun test6(): I = findViewById6()
+
+fun <T: View4> findViewById7(): T = null as T
+fun test7(): I = findViewById7()
+
+inline fun <reified T: View4> findViewById8(): T = null as T
+fun test8(): I = findViewById8()
+
+fun <T> findViewById9(): T where T: View3, T: View5 = null as T
+fun test9(): I = findViewById9()
+
+inline fun <reified T> findViewById10(): T where T: View3, T: View5 = null as T
+fun test10(): I = findViewById10()
+
+fun <T: View2> findViewById11(): T = null as T
+fun test11(): View4 = findViewById11()
+
+object Obj {
+    fun <T: I> findViewById1(): T = null as T
+    fun test1(): View1 = findViewById1()
+
+    fun <T: I> findViewById2(): T = null as T
+    fun test2(): View2 = findViewById2()
+
+    inline fun <reified T: I> findViewById3(): T = null as T
+    fun test3(): View1 = findViewById3()
+
+    inline fun <reified T: I> findViewById4(): T = null as T
+    fun test4(): View2 = findViewById4()
+
+    fun <T: I> findViewById5(): T = null as T
+    fun test5(): View3 = findViewById5()
+
+    inline fun <reified T: I> findViewById6(): T = null as T
+    fun test6(): View3 = findViewById6()
+
+    fun <T: I> findViewById7(): T = null as T
+    fun test7(): View4 = findViewById7()
+
+    inline fun <reified T: I> findViewById8(): T = null as T
+    fun test8(): View4 = findViewById8()
+
+    fun <T> findViewById9(): T where T: View3, T: View5 = null as T
+    fun test9(): View1 = findViewById9()
+
+    inline fun <reified T> findViewById10(): T where T: View3, T: View5 = null as T
+    fun test10(): View1 = findViewById10()
+
+    fun <T: View2> findViewById11(): T = null as T
+    fun test11(): View4 = findViewById11()
+}
+
+interface A
+open class B {
+    fun <T> f(): T where T : A, T : B = null as T
+    fun g(): A = f()
+}
@@ -0,0 +1,83 @@
+// !DIAGNOSTICS: -FINAL_UPPER_BOUND -CAST_NEVER_SUCCEEDS
+
+interface I
+
+class View1
+open class View2
+interface View3
+abstract class View4
+interface View5
+
+fun <T: View1> findViewById1(): T = null as T
+fun test1(): I = <!TYPE_MISMATCH!><!TYPE_MISMATCH!>findViewById1<!>()<!>
+
+fun <T: View2> findViewById2(): T = null as T
+fun test2(): I = findViewById2()
+
+inline fun <reified T: View1> findViewById3(): T = null as T
+fun test3(): I = <!TYPE_MISMATCH!><!TYPE_MISMATCH!>findViewById3<!>()<!>
+
+inline fun <reified T: View2> findViewById4(): T = null as T
+fun test4(): I = findViewById4()
+
+fun <T: View3> findViewById5(): T = null as T
+fun test5(): I = findViewById5()
+
+inline fun <reified T: View3> findViewById6(): T = null as T
+fun test6(): I = findViewById6()
+
+fun <T: View4> findViewById7(): T = null as T
+fun test7(): I = findViewById7()
+
+inline fun <reified T: View4> findViewById8(): T = null as T
+fun test8(): I = findViewById8()
+
+fun <T> findViewById9(): T where T: View3, T: View5 = null as T
+fun test9(): I = findViewById9()
+
+inline fun <reified T> findViewById10(): T where T: View3, T: View5 = null as T
+fun test10(): I = findViewById10()
+
+fun <T: View2> findViewById11(): T = null as T
+fun test11(): View4 = <!TYPE_MISMATCH!><!TYPE_MISMATCH!>findViewById11<!>()<!>
+
+object Obj {
+    fun <T: I> findViewById1(): T = null as T
+    fun test1(): View1 = <!TYPE_MISMATCH!><!TYPE_MISMATCH!>findViewById1<!>()<!>
+
+    fun <T: I> findViewById2(): T = null as T
+    fun test2(): View2 = findViewById2()
+
+    inline fun <reified T: I> findViewById3(): T = null as T
+    fun test3(): View1 = <!TYPE_MISMATCH!><!TYPE_MISMATCH!>findViewById3<!>()<!>
+
+    inline fun <reified T: I> findViewById4(): T = null as T
+    fun test4(): View2 = findViewById4()
+
+    fun <T: I> findViewById5(): T = null as T
+    fun test5(): View3 = findViewById5()
+
+    inline fun <reified T: I> findViewById6(): T = null as T
+    fun test6(): View3 = findViewById6()
+
+    fun <T: I> findViewById7(): T = null as T
+    fun test7(): View4 = findViewById7()
+
+    inline fun <reified T: I> findViewById8(): T = null as T
+    fun test8(): View4 = findViewById8()
+
+    fun <T> findViewById9(): T where T: View3, T: View5 = null as T
+    fun test9(): View1 = <!TYPE_MISMATCH!><!TYPE_MISMATCH!>findViewById9<!>()<!>
+
+    inline fun <reified T> findViewById10(): T where T: View3, T: View5 = null as T
+    fun test10(): View1 = <!TYPE_MISMATCH!><!TYPE_MISMATCH!>findViewById10<!>()<!>
+
+    fun <T: View2> findViewById11(): T = null as T
+    fun test11(): View4 = <!TYPE_MISMATCH!><!TYPE_MISMATCH!>findViewById11<!>()<!>
+}
+
+interface A
+open class B {
+    fun <T> f(): T where T : A, T : B = null as T
+    fun g(): A = f()
+}
@@ -0,0 +1,107 @@
+package
+
+public fun </*0*/ T : View1> findViewById1(): T
+public inline fun </*0*/ reified T : View3> findViewById10(): T where T : View5
+public fun </*0*/ T : View2> findViewById11(): T
+public fun </*0*/ T : View2> findViewById2(): T
+public inline fun </*0*/ reified T : View1> findViewById3(): T
+public inline fun </*0*/ reified T : View2> findViewById4(): T
+public fun </*0*/ T : View3> findViewById5(): T
+public inline fun </*0*/ reified T : View3> findViewById6(): T
+public fun </*0*/ T : View4> findViewById7(): T
+public inline fun </*0*/ reified T : View4> findViewById8(): T
+public fun </*0*/ T : View3> findViewById9(): T where T : View5
+public fun test1(): I
+public fun test10(): I
+public fun test11(): View4
+public fun test2(): I
+public fun test3(): I
+public fun test4(): I
+public fun test5(): I
+public fun test6(): I
+public fun test7(): I
+public fun test8(): I
+public fun test9(): I
+
+public interface A {
+    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
+}
+
+public open class B {
+    public constructor B()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public final fun </*0*/ T : A> f(): T where T : B
+    public final fun g(): A
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public interface I {
+    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
+}
+
+public object Obj {
+    private constructor Obj()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public final fun </*0*/ T : I> findViewById1(): T
+    public final inline fun </*0*/ reified T : View3> findViewById10(): T where T : View5
+    public final fun </*0*/ T : View2> findViewById11(): T
+    public final fun </*0*/ T : I> findViewById2(): T
+    public final inline fun </*0*/ reified T : I> findViewById3(): T
+    public final inline fun </*0*/ reified T : I> findViewById4(): T
+    public final fun </*0*/ T : I> findViewById5(): T
+    public final inline fun </*0*/ reified T : I> findViewById6(): T
+    public final fun </*0*/ T : I> findViewById7(): T
+    public final inline fun </*0*/ reified T : I> findViewById8(): T
+    public final fun </*0*/ T : View3> findViewById9(): T where T : View5
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public final fun test1(): View1
+    public final fun test10(): View1
+    public final fun test11(): View4
+    public final fun test2(): View2
+    public final fun test3(): View1
+    public final fun test4(): View2
+    public final fun test5(): View3
+    public final fun test6(): View3
+    public final fun test7(): View4
+    public final fun test8(): View4
+    public final fun test9(): View1
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class View1 {
+    public constructor View1()
+    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
+}
+
+public open class View2 {
+    public constructor View2()
+    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
+}
+
+public interface View3 {
+    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
+}
+
+public abstract class View4 {
+    public constructor View4()
+    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
+}
+
+public interface View5 {
+    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
+}