fix throw Exception, for issue #3610

core/src/main/java/com/alibaba/fastjson2/JSONReaderASCII.java

@@ -1059,7 +1059,11 @@ final class JSONReaderASCII
                 this.nameLength = i;
                 this.nameEnd = offset;
                 offset++;
-                c = bytes[offset];
+                if (offset < end) {
+                    c = bytes[offset];
+                } else {
+                    c = EOI;
+                }
 
                 while (c <= ' ' && ((1L << c) & SPACE) != 0) {
                     offset++;

core/src/main/java/com/alibaba/fastjson2/JSONReaderUTF8.java

@@ -3106,7 +3106,11 @@ class JSONReaderUTF8
                 this.nameLength = i;
                 this.nameEnd = offset;
                 offset++;
-                ch = bytes[offset] & 0xff;
+                if (offset < end) {
+                    ch = bytes[offset] & 0xff;
+                } else {
+                    ch = EOI;
+                }
 
                 while (ch <= ' ' && ((1L << ch) & SPACE) != 0) {
                     offset++;

core/src/test/java/com/alibaba/fastjson2/issues_3600/Issue3610.java

@@ -0,0 +1,27 @@
+package com.alibaba.fastjson2.issues_3600;
+
+import com.alibaba.fastjson2.JSON;
+import com.alibaba.fastjson2.JSONException;
+import org.junit.jupiter.api.Test;
+
+import java.nio.charset.StandardCharsets;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+public class Issue3610 {
+    @Test
+    public void test() {
+        String str = "{\"screenWidth\":1920,\"isSupportSmallWindow\"";
+        assertThrows(JSONException.class, () -> JSON.parseObject(str.getBytes(StandardCharsets.UTF_8)));
+        assertThrows(JSONException.class, () -> JSON.parseObject(str.toCharArray()));
+        assertThrows(JSONException.class, () -> JSON.parseObject(str));
+    }
+
+    @Test
+    public void testUTF8() {
+        String str = "{\"中文\":1920,\"isSupportSmallWindow\"";
+        assertThrows(JSONException.class, () -> JSON.parseObject(str.getBytes(StandardCharsets.UTF_8)));
+        assertThrows(JSONException.class, () -> JSON.parseObject(str.toCharArray()));
+        assertThrows(JSONException.class, () -> JSON.parseObject(str));
+    }
+}