JVM IR: allow custom toArray to have any array type

To avoid breaking Java source compatibility. This problem can be fixed
later once JVM IR is stabilized.

 #KT-43111 Fixed

compiler/testData/codegen/bytecodeListing/collectionStubs/toArray/customNonGenericToArray.kt

@@ -0,0 +1,11 @@
+class InternalToArray(d: Collection<Any>): Collection<Any> by d {
+    internal fun toArray(): Array<Int> = null!!
+}
+
+class PrivateToArray(d: Collection<Any>): Collection<Any> by d {
+    private fun toArray(): Array<Int> = null!!
+}
+
+class PublicToArray(d: Collection<Any>): Collection<Any> by d {
+    public fun toArray(): Array<Int> = null!!
+}

compiler/testData/codegen/bytecodeListing/collectionStubs/toArray/customNonGenericToArray.txt

@@ -0,0 +1,62 @@
+@kotlin.Metadata
+public final class InternalToArray {
+    // source: 'customNonGenericToArray.kt'
+    private synthetic final field $$delegate_0: java.util.Collection
+    public method <init>(@org.jetbrains.annotations.NotNull p0: java.util.Collection): void
+    public method add(p0: java.lang.Object): boolean
+    public method addAll(p0: java.util.Collection): boolean
+    public method clear(): void
+    public method contains(@org.jetbrains.annotations.NotNull p0: java.lang.Object): boolean
+    public method containsAll(@org.jetbrains.annotations.NotNull p0: java.util.Collection): boolean
+    public method getSize(): int
+    public method isEmpty(): boolean
+    public @org.jetbrains.annotations.NotNull method iterator(): java.util.Iterator
+    public method remove(p0: java.lang.Object): boolean
+    public method removeAll(p0: java.util.Collection): boolean
+    public method retainAll(p0: java.util.Collection): boolean
+    public bridge final method size(): int
+    public final @org.jetbrains.annotations.NotNull method toArray$test_module(): java.lang.Integer[]
+    public method toArray(p0: java.lang.Object[]): java.lang.Object[]
+}
+
+@kotlin.Metadata
+public final class PrivateToArray {
+    // source: 'customNonGenericToArray.kt'
+    private synthetic final field $$delegate_0: java.util.Collection
+    public method <init>(@org.jetbrains.annotations.NotNull p0: java.util.Collection): void
+    public method add(p0: java.lang.Object): boolean
+    public method addAll(p0: java.util.Collection): boolean
+    public method clear(): void
+    public method contains(@org.jetbrains.annotations.NotNull p0: java.lang.Object): boolean
+    public method containsAll(@org.jetbrains.annotations.NotNull p0: java.util.Collection): boolean
+    public method getSize(): int
+    public method isEmpty(): boolean
+    public @org.jetbrains.annotations.NotNull method iterator(): java.util.Iterator
+    public method remove(p0: java.lang.Object): boolean
+    public method removeAll(p0: java.util.Collection): boolean
+    public method retainAll(p0: java.util.Collection): boolean
+    public bridge final method size(): int
+    public final @org.jetbrains.annotations.NotNull method toArray(): java.lang.Integer[]
+    public method toArray(p0: java.lang.Object[]): java.lang.Object[]
+}
+
+@kotlin.Metadata
+public final class PublicToArray {
+    // source: 'customNonGenericToArray.kt'
+    private synthetic final field $$delegate_0: java.util.Collection
+    public method <init>(@org.jetbrains.annotations.NotNull p0: java.util.Collection): void
+    public method add(p0: java.lang.Object): boolean
+    public method addAll(p0: java.util.Collection): boolean
+    public method clear(): void
+    public method contains(@org.jetbrains.annotations.NotNull p0: java.lang.Object): boolean
+    public method containsAll(@org.jetbrains.annotations.NotNull p0: java.util.Collection): boolean
+    public method getSize(): int
+    public method isEmpty(): boolean
+    public @org.jetbrains.annotations.NotNull method iterator(): java.util.Iterator
+    public method remove(p0: java.lang.Object): boolean
+    public method removeAll(p0: java.util.Collection): boolean
+    public method retainAll(p0: java.util.Collection): boolean
+    public bridge final method size(): int
+    public final @org.jetbrains.annotations.NotNull method toArray(): java.lang.Integer[]
+    public method toArray(p0: java.lang.Object[]): java.lang.Object[]
+}

compiler/testData/codegen/bytecodeListing/collectionStubs/toArray/customNonGenericToArray_ir.txt

@@ -0,0 +1,62 @@
+@kotlin.Metadata
+public final class InternalToArray {
+    // source: 'customNonGenericToArray.kt'
+    private synthetic final field $$delegate_0: java.util.Collection
+    public method <init>(@org.jetbrains.annotations.NotNull p0: java.util.Collection): void
+    public method add(p0: java.lang.Object): boolean
+    public method addAll(p0: java.util.Collection): boolean
+    public method clear(): void
+    public method contains(@org.jetbrains.annotations.Nullable p0: java.lang.Object): boolean
+    public method containsAll(@org.jetbrains.annotations.NotNull p0: java.util.Collection): boolean
+    public method getSize(): int
+    public method isEmpty(): boolean
+    public @org.jetbrains.annotations.NotNull method iterator(): java.util.Iterator
+    public method remove(p0: java.lang.Object): boolean
+    public method removeAll(p0: java.util.Collection): boolean
+    public method retainAll(p0: java.util.Collection): boolean
+    public bridge final method size(): int
+    public final @org.jetbrains.annotations.NotNull method toArray(): java.lang.Integer[]
+    public method toArray(p0: java.lang.Object[]): java.lang.Object[]
+}
+
+@kotlin.Metadata
+public final class PrivateToArray {
+    // source: 'customNonGenericToArray.kt'
+    private synthetic final field $$delegate_0: java.util.Collection
+    public method <init>(@org.jetbrains.annotations.NotNull p0: java.util.Collection): void
+    public method add(p0: java.lang.Object): boolean
+    public method addAll(p0: java.util.Collection): boolean
+    public method clear(): void
+    public method contains(@org.jetbrains.annotations.Nullable p0: java.lang.Object): boolean
+    public method containsAll(@org.jetbrains.annotations.NotNull p0: java.util.Collection): boolean
+    public method getSize(): int
+    public method isEmpty(): boolean
+    public @org.jetbrains.annotations.NotNull method iterator(): java.util.Iterator
+    public method remove(p0: java.lang.Object): boolean
+    public method removeAll(p0: java.util.Collection): boolean
+    public method retainAll(p0: java.util.Collection): boolean
+    public bridge final method size(): int
+    public final @org.jetbrains.annotations.NotNull method toArray(): java.lang.Integer[]
+    public method toArray(p0: java.lang.Object[]): java.lang.Object[]
+}
+
+@kotlin.Metadata
+public final class PublicToArray {
+    // source: 'customNonGenericToArray.kt'
+    private synthetic final field $$delegate_0: java.util.Collection
+    public method <init>(@org.jetbrains.annotations.NotNull p0: java.util.Collection): void
+    public method add(p0: java.lang.Object): boolean
+    public method addAll(p0: java.util.Collection): boolean
+    public method clear(): void
+    public method contains(@org.jetbrains.annotations.Nullable p0: java.lang.Object): boolean
+    public method containsAll(@org.jetbrains.annotations.NotNull p0: java.util.Collection): boolean
+    public method getSize(): int
+    public method isEmpty(): boolean
+    public @org.jetbrains.annotations.NotNull method iterator(): java.util.Iterator
+    public method remove(p0: java.lang.Object): boolean
+    public method removeAll(p0: java.util.Collection): boolean
+    public method retainAll(p0: java.util.Collection): boolean
+    public bridge final method size(): int
+    public final @org.jetbrains.annotations.NotNull method toArray(): java.lang.Integer[]
+    public method toArray(p0: java.lang.Object[]): java.lang.Object[]
+}