Move unhandledExceptionHook to kotlin code (#4704)

kotlin-native/backend.native/tests/runtime/exceptions/custom_hook.kt

@@ -6,31 +6,17 @@ import kotlin.test.*
 
 import kotlin.native.concurrent.*
 
-fun setHookLegacyMM(hook: ReportUnhandledExceptionHook) : ReportUnhandledExceptionHook? {
+fun main(args : Array<String>) {
     assertFailsWith<InvalidMutabilityException> {
         setUnhandledExceptionHook { _ -> println("wrong") }
     }
 
-    return setUnhandledExceptionHook(hook.freeze())
-}
-
-fun setHookNewMM(hook: ReportUnhandledExceptionHook) : ReportUnhandledExceptionHook? {
-    return setUnhandledExceptionHook(hook)
-}
-
-fun setHook(hook: ReportUnhandledExceptionHook) : ReportUnhandledExceptionHook? {
-    return when (kotlin.native.Platform.memoryModel) {
-        kotlin.native.MemoryModel.EXPERIMENTAL -> setHookNewMM(hook)
-        else -> setHookLegacyMM(hook)
-    }
-}
-
-fun main() {
     val x = 42
-    val old = setHook {
+    val old = setUnhandledExceptionHook({
         throwable: Throwable -> println("value $x: ${throwable::class.simpleName}")
-    }
+    }.freeze())
 
     assertNull(old)
+
     throw Error("an error")
-}
+}

kotlin-native/backend.native/tests/runtime/exceptions/exception_in_global_init.kt

@@ -0,0 +1,12 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+import kotlin.test.*
+
+val p: Nothing = error("FAIL")
+
+fun main() {
+    println("in kotlin main")
+}