--- old/src/share/vm/logging/logFileOutput.cpp	2016-03-31 18:20:38.577958721 +0900
+++ new/src/share/vm/logging/logFileOutput.cpp	2016-03-31 18:20:38.009697414 +0900
@@ -26,6 +26,7 @@
 #include "logging/logConfiguration.hpp"
 #include "logging/logFileOutput.hpp"
 #include "memory/allocation.inline.hpp"
+#include "runtime/arguments.hpp"
 #include "runtime/os.inline.hpp"
 #include "utilities/globalDefinitions.hpp"
 #include "utilities/defaultStream.hpp"
@@ -116,12 +117,7 @@
       _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;