Fix long initializer for 'array.array'.

Author: fangerer

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/ArrayModuleBuiltins.java

@@ -193,8 +193,8 @@ PArray arrayLongInitializer(PythonClass cls, @SuppressWarnings("unused") String
                     e.expectStopIteration(getCore(), errorProfile);
                     break;
                 }
-                if (nextValue instanceof Long) {
-                    longArray[i++] = (long) nextValue;
+                if (nextValue instanceof Number) {
+                    longArray[i++] = longValue((Number) nextValue);
                 } else {
                     throw raise(ValueError, "integer argument expected, got %p", nextValue);
                 }
@@ -244,6 +244,11 @@ PArray arrayWithObjectInitializer(@SuppressWarnings("unused") PythonClass cls, @
             throw new RuntimeException("Unsupported initializer " + initializer);
         }
 
+        @TruffleBoundary
+        private static long longValue(Number n) {
+            return n.longValue();
+        }
+
         private PArray makeEmptyArray(PythonClass cls, char type) {
             switch (type) {
                 case 'c':