Minor. Added regression tests for: KT-3927, KT-9522, KT-10036, KT-7440, KT-9682, KT-9808, KT-9517, KT-9810, KT-9345.

compiler/testData/diagnostics/tests/regressions/kt9682.kt

@@ -0,0 +1,28 @@
+// KT-9682 Overload Resolution Ambiguity after casting to Interface
+
+open class Foo {
+    fun bar(): Foo {
+        return this
+    }
+}
+
+class Foo2 : Foo(), IFoo
+
+interface IFoo {
+    fun bar(): Foo
+}
+
+fun test() {
+    val foo : Foo = Foo2()
+    foo as IFoo
+    foo.bar() // Should be resolved to Foo#bar
+}
+
+interface IFoo2 {
+    fun bar(): IFoo2
+}
+
+fun test2(foo: Foo) {
+    foo as IFoo2
+    foo.<!OVERLOAD_RESOLUTION_AMBIGUITY!>bar<!>() // should be ambiguity
+}

compiler/testData/diagnostics/tests/regressions/kt9682.txt

@@ -0,0 +1,34 @@
+package
+
+public fun test(): kotlin.Unit
+public fun test2(/*0*/ foo: Foo): kotlin.Unit
+
+public open class Foo {
+    public constructor Foo()
+    public final fun bar(): Foo
+    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 final class Foo2 : Foo, IFoo {
+    public constructor Foo2()
+    public final override /*2*/ /*fake_override*/ fun bar(): Foo
+    public open override /*2*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*2*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*2*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public interface IFoo {
+    public abstract fun bar(): Foo
+    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 IFoo2 {
+    public abstract fun bar(): IFoo2
+    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
+}

compiler/testData/diagnostics/tests/regressions/kt9808.kt

@@ -0,0 +1,8 @@
+// KT-9808 Extension function on object for new resolve
+object O
+
+val foo: O.() -> Unit  = null!!
+
+fun test() {
+    O.foo()
+}

compiler/testData/diagnostics/tests/regressions/kt9808.txt

@@ -0,0 +1,11 @@
+package
+
+public val foo: O.() -> kotlin.Unit
+public fun test(): kotlin.Unit
+
+public object O {
+    private constructor O()
+    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
+}