From 4c4c6f4c6ab3e731ad8d78df91dcfea6c1658fce Mon Sep 17 00:00:00 2001
From: yanxutao89 <910135896@qq.com>
Date: Wed, 9 Jul 2025 23:18:58 +0800
Subject: [PATCH] fix build warning and dot missing in graavlvm native mode,
 for issue #3587

---
 .../main/java/com/alibaba/fastjson2/util/IOUtils.java  | 10 ++++------
 .../main/java/com/alibaba/fastjson2/util/JDKUtils.java |  9 +++------
 2 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/core/src/main/java/com/alibaba/fastjson2/util/IOUtils.java b/core/src/main/java/com/alibaba/fastjson2/util/IOUtils.java
index 1750dc9a5..26657a938 100644
--- a/core/src/main/java/com/alibaba/fastjson2/util/IOUtils.java
+++ b/core/src/main/java/com/alibaba/fastjson2/util/IOUtils.java
@@ -61,7 +61,6 @@ public class IOUtils {
     };
 
     private static final short ZERO_DOT_LATIN1;
-    private static final int ZERO_DOT_UTF16;
 
     static {
         short[] shorts = new short[]{
@@ -105,7 +104,6 @@ public class IOUtils {
             DIGITS_K_64[i] = c0 + v;
         }
         ZERO_DOT_LATIN1 = UNSAFE.getShort(new byte[] {'0', '.'}, ARRAY_BYTE_BASE_OFFSET);
-        ZERO_DOT_UTF16 = UNSAFE.getInt(new char[] {'0', '.'}, ARRAY_CHAR_BASE_OFFSET);
     }
 
     private static short digitPair(int value) {
@@ -343,11 +341,11 @@ public class IOUtils {
             int unscaleValSize = stringSize(unscaledVal);
             int insertionPoint = unscaleValSize - scale;
             if (insertionPoint == 0) {
-                putIntUnaligned(buf, off, ZERO_DOT_UTF16);
-                off += 2;
+                buf[off++] = '0';
+                buf[off++] = '.';
             } else if (insertionPoint < 0) {
-                putIntUnaligned(buf, off, ZERO_DOT_UTF16);
-                off += 2;
+                buf[off++] = '0';
+                buf[off++] = '.';
 
                 for (int i = 0; i < -insertionPoint; i++) {
                     putChar(buf, off++, '0');
diff --git a/core/src/main/java/com/alibaba/fastjson2/util/JDKUtils.java b/core/src/main/java/com/alibaba/fastjson2/util/JDKUtils.java
index 8d6f8db5a..33d470b38 100644
--- a/core/src/main/java/com/alibaba/fastjson2/util/JDKUtils.java
+++ b/core/src/main/java/com/alibaba/fastjson2/util/JDKUtils.java
@@ -70,22 +70,19 @@ public class JDKUtils {
 
     static {
         Unsafe unsafe;
-        long offset, charOffset;
         try {
             Field theUnsafeField = Unsafe.class.getDeclaredField("theUnsafe");
             theUnsafeField.setAccessible(true);
             unsafe = (Unsafe) theUnsafeField.get(null);
-            offset = unsafe.arrayBaseOffset(byte[].class);
-            charOffset = unsafe.arrayBaseOffset(char[].class);
+            ARRAY_BYTE_BASE_OFFSET = unsafe.arrayBaseOffset(byte[].class);
+            ARRAY_CHAR_BASE_OFFSET = unsafe.arrayBaseOffset(char[].class);
         } catch (Throwable e) {
             throw new JSONException("init unsafe error", e);
         }
 
         UNSAFE = unsafe;
-        ARRAY_BYTE_BASE_OFFSET = offset;
-        ARRAY_CHAR_BASE_OFFSET = charOffset;
 
-        if (offset == -1) {
+        if (ARRAY_BYTE_BASE_OFFSET == -1 || ARRAY_CHAR_BASE_OFFSET == -1) {
             throw new JSONException("init JDKUtils error", initErrorLast);
         }