Fix array accessor signatures, add array test to fix.

backend.native/tests/build.gradle

@@ -206,6 +206,13 @@ task array0(type: RunKonanTest) {
     source = "runtime/basic/array0.kt"
 }
 
+/*
+task array1(type: RunKonanTest) {
+    goldValue = "42\n1-1\n69\n83\n"
+    source = "runtime/basic/array1.kt"
+    }*/
+
+
 task if_else(type: UnitKonanTest) {
     source = "codegen/branching/if_else.kt"
 }

backend.native/tests/runtime/basic/array1.kt

@@ -0,0 +1,27 @@
+fun main(args : Array<String>) {
+    val byteArray = ByteArray(5)
+    byteArray[1] = 2
+    byteArray[3] = 4
+    println(byteArray[3].toString() + " "  + byteArray[1].toString())
+
+    val shortArray = ShortArray(2)
+    shortArray[0] = -1
+    shortArray[1] = 1
+    print(shortArray[1].toString())
+    print(shortArray[0].toString())
+    println()
+
+    val intArray = IntArray(7)
+    intArray[1] = 9
+    intArray[3] = 6
+    print(intArray[3].toString())
+    print(intArray[1].toString())
+    println()
+
+    val longArray = LongArray(9)
+    longArray[8] = 8
+    longArray[3] = 3
+    print(longArray[3].toString())
+    print(longArray[8].toString())
+    println()
+}

runtime/src/main/cpp/Natives.cpp

@@ -90,6 +90,8 @@ KString Kotlin_String_fromUtf8Array(const ArrayHeader* array) {
 
 KString Kotlin_String_plusImpl(KString thiz, KString other) {
   // TODO: support UTF-8
+  RuntimeAssert(thiz != nullptr, "this cannot be null");
+  RuntimeAssert(other != nullptr, "other cannot be null");
   RuntimeAssert(thiz->type_info() == theStringTypeInfo, "Must be a string");
   RuntimeAssert(other->type_info() == theStringTypeInfo, "Must be a string");
   uint32_t result_length = thiz->count_ + other->count_;

runtime/src/main/kotlin/kotlin/Arrays.kt

@@ -72,7 +72,7 @@ class IntArray : Cloneable {
         get() = getArrayLength()
 
     @SymbolName("Kotlin_IntArray_get")
-    external public operator fun get(index: Int): Char
+    external public operator fun get(index: Int): Int
 
     @SymbolName("Kotlin_IntArray_set")
     external public operator fun set(index: Int, value: Int): Unit
@@ -93,7 +93,7 @@ class LongArray : Cloneable {
         get() = getArrayLength()
 
     @SymbolName("Kotlin_LongArray_get")
-    external public operator fun get(index: Int): Char
+    external public operator fun get(index: Int): Long
 
     @SymbolName("Kotlin_LongArray_set")
     external public operator fun set(index: Int, value: Long): Unit
@@ -114,7 +114,7 @@ class FloatArray : Cloneable {
         get() = getArrayLength()
 
     @SymbolName("Kotlin_FloatArray_get")
-    external public operator fun get(index: Int): Char
+    external public operator fun get(index: Int): Float
 
     @SymbolName("Kotlin_FloatArray_set")
     external public operator fun set(index: Int, value: Float): Unit
@@ -135,7 +135,7 @@ class DoubleArray : Cloneable {
         get() = getArrayLength()
 
     @SymbolName("Kotlin_DoubleArray_get")
-    external public operator fun get(index: Int): Char
+    external public operator fun get(index: Int): Double
 
     @SymbolName("Kotlin_DoubleArray_set")
     external public operator fun set(index: Int, value: Double): Unit
@@ -156,7 +156,7 @@ class BooleanArray : Cloneable {
         get() = getArrayLength()
 
     @SymbolName("Kotlin_BooleanArray_get")
-    external public operator fun get(index: Int): Char
+    external public operator fun get(index: Int): Boolean
 
     @SymbolName("Kotlin_BooleanArray_set")
     external public operator fun set(index: Int, value: Boolean): Unit