--- a/src/hotspot/share/prims/jni.cpp	Mon Jun 04 22:03:10 2018 +0200
+++ b/src/hotspot/share/prims/jni.cpp	Mon Jun 04 23:01:48 2018 +0200
@@ -2466,7 +2466,8 @@
     if (buf != NULL) {
       if (s_len > 0) {
         if (!is_latin1) {
-          memcpy(buf, s_value->char_at_addr(0), sizeof(jchar)*s_len);
+          ArrayAccess<>::arraycopy_to_native(s_value, (size_t) typeArrayOopDesc::element_offset<jchar>(0),
+                                             buf, s_len);
         } else {
           for (int i = 0; i < s_len; i++) {
             buf[i] = ((jchar) s_value->byte_at(i)) & 0xff;
@@ -2722,7 +2723,8 @@
     result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
     if (result != NULL) {                                                \
       /* copy the array to the c chunk */                                \
-      memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len);      \
+      ArrayAccess<>::arraycopy_to_native(a, typeArrayOopDesc::element_offset<ElementType>(0), \
+                                         result, len);                   \
       if (isCopy) {                                                      \
         *isCopy = JNI_TRUE;                                              \
       }                                                                  \
@@ -2771,7 +2773,7 @@
   int len = a->length(); \
   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \
     if ((mode == 0) || (mode == JNI_COMMIT)) { \
-      memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
+      ArrayAccess<>::arraycopy_from_native(buf, a, typeArrayOopDesc::element_offset<ElementType>(0), len); \
     } \
     if ((mode == 0) || (mode == JNI_ABORT)) { \
       FreeHeap(buf); \
@@ -2822,10 +2824,7 @@
     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
   } else { \
     if (len > 0) { \
-      int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
-      memcpy((u_char*) buf, \
-             (u_char*) src->Tag##_at_addr(start), \
-             len << sc);                          \
+      ArrayAccess<>::arraycopy_to_native(src, typeArrayOopDesc::element_offset<ElementType>(start), buf, len); \
     } \
   } \
 JNI_END
@@ -2872,10 +2871,7 @@
     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
   } else { \
     if (len > 0) { \
-      int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
-      memcpy((u_char*) dst->Tag##_at_addr(start), \
-             (u_char*) buf, \
-             len << sc);    \
+      ArrayAccess<>::arraycopy_from_native(buf, dst, typeArrayOopDesc::element_offset<ElementType>(start), len); \
     } \
   } \
 JNI_END
@@ -3111,7 +3107,8 @@
       typeArrayOop s_value = java_lang_String::value(s);
       bool is_latin1 = java_lang_String::is_latin1(s);
       if (!is_latin1) {
-        memcpy(buf, s_value->char_at_addr(start), sizeof(jchar)*len);
+        ArrayAccess<>::arraycopy_to_native(s_value, typeArrayOopDesc::element_offset<jchar>(start),
+                                           buf, len);
       } else {
         for (int i = 0; i < len; i++) {
           buf[i] = ((jchar) s_value->byte_at(i + start)) & 0xff;