--- old/src/share/vm/logging/logFileOutput.cpp	2016-03-30 22:57:37.987642095 +0900
+++ new/src/share/vm/logging/logFileOutput.cpp	2016-03-30 22:57:37.826642213 +0900
@@ -116,12 +116,7 @@
       _archive_name_len = 2 + strlen(_file_name) + _file_count_max_digits;
       _archive_name = NEW_C_HEAP_ARRAY(char, _archive_name_len, mtLogging);
     } else if (strcmp(FileSizeOptionKey, key) == 0) {
-      size_t value = parse_value(value_str);
-      if (value == SIZE_MAX || value > SIZE_MAX / K) {
-        success = false;
-        break;
-      }
-      _rotate_size = value * K;
+      success = Arguments::atomull(value_str, &_rotate_size);
     } else {
       success = false;
       break;
--- old/src/share/vm/runtime/arguments.cpp	2016-03-30 22:57:38.588641657 +0900
+++ new/src/share/vm/runtime/arguments.cpp	2016-03-30 22:57:38.410641787 +0900
@@ -786,7 +786,7 @@
 }
 
 // Parses a memory size specification string.
-static bool atomull(const char *s, julong* result) {
+bool Arguments::atomull(const char *s, julong* result) {
   julong n = 0;
   int args_read = 0;
   bool is_hex = false;
@@ -900,7 +900,7 @@
     value++;
     is_neg = true;
   }
-  if (!atomull(value, &v)) {
+  if (!Arguments::atomull(value, &v)) {
     return false;
   }
   if (result->is_int()) {
@@ -2640,7 +2640,7 @@
 
   if (value_is_positive) {
     julong n;
-    bool good_return = atomull(value, &n);
+    bool good_return = Arguments::atomull(value, &n);
     if (good_return) {
       bool above_minimum = n >= min_size;
       bool value_is_too_large = n > max_uintx;
@@ -2657,7 +2657,7 @@
 Arguments::ArgsRange Arguments::parse_memory_size(const char* s,
                                                   julong* long_arg,
                                                   julong min_size) {
-  if (!atomull(s, long_arg)) return arg_unreadable;
+  if (!Arguments::atomull(s, long_arg)) return arg_unreadable;
   return check_memory_size(*long_arg, min_size);
 }
 
--- old/src/share/vm/runtime/arguments.hpp	2016-03-30 22:57:39.310641130 +0900
+++ new/src/share/vm/runtime/arguments.hpp	2016-03-30 22:57:39.143641252 +0900
@@ -730,6 +730,8 @@
   static bool copy_expand_pid(const char* src, size_t srclen, char* buf, size_t buflen);
 
   static void check_unsupported_dumping_properties() NOT_CDS_RETURN;
+
+  static bool atomull(const char *s, julong* result);
 };
 
 // Disable options not supported in this release, with a warning if they