--- old/src/java.base/share/classes/java/lang/AbstractStringBuilder.java	2015-11-22 22:44:16.466009696 +0300
+++ new/src/java.base/share/classes/java/lang/AbstractStringBuilder.java	2015-11-22 22:44:16.366010040 +0300
@@ -736,8 +736,7 @@
             append("-2147483648");
             return this;
         }
-        int appendedLength = (i < 0) ? Integer.stringSize(-i) + 1
-                                     : Integer.stringSize(i);
+        int appendedLength = Integer.stringSize(i);
         int spaceNeeded = count + appendedLength;
         ensureCapacityInternal(spaceNeeded);
         if (isLatin1()) {
@@ -768,8 +767,7 @@
             append("-9223372036854775808");
             return this;
         }
-        int appendedLength = (l < 0) ? Long.stringSize(-l) + 1
-                                     : Long.stringSize(l);
+        int appendedLength = Long.stringSize(l);
         int spaceNeeded = count + appendedLength;
         ensureCapacityInternal(spaceNeeded);
         if (isLatin1()) {