字段过多导致反序列化失败

[Iamxf]

fastjson版本：1.2.83

类xxx.java字段过多时，执行JSON.toJavaObject(JSON.parseObject(a), xxx.class)，报错：

java.lang.VerifyError: (class: com/alibaba/fastjson/parser/deserializer/FastjsonASMDeserializer_1_xxx, method: deserialze signature: (Lcom/alibaba/fastjson/parser/DefaultJSONParser;Ljava/lang/reflect/Type;Ljava/lang/Object;I)Ljava/lang/Object;) Register 5 contains wrong type
	at java.base/java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.base/java.lang.Class.privateGetDeclaredConstructors(Class.java:3137)
	at java.base/java.lang.Class.getConstructor0(Class.java:3342)
	at java.base/java.lang.Class.getConstructor(Class.java:2151)
	at com.alibaba.fastjson.parser.deserializer.ASMDeserializerFactory.createJavaBeanDeserializer(ASMDeserializerFactory.java:87)
	at com.alibaba.fastjson.parser.ParserConfig.createJavaBeanDeserializer(ParserConfig.java:1073)
	at com.alibaba.fastjson.parser.ParserConfig.getDeserializer(ParserConfig.java:879)
	at com.alibaba.fastjson.parser.ParserConfig.getDeserializer(ParserConfig.java:584)
	at com.alibaba.fastjson.util.TypeUtils.castToJavaBean(TypeUtils.java:1559)
	at com.alibaba.fastjson.util.TypeUtils.cast(TypeUtils.java:1127)
	at com.alibaba.fastjson.JSON.toJavaObject(JSON.java:1236)

断点调试之后发现，代码执行到 com.alibaba.fastjson.parser.deserializer.ASMDeserializerFactory#_deserialze_list_obj 的 mw.visitIincInsn(context.var("i"), 1) 这一行时，context.var("i")这个值是261，在最后生成的class里本应该是++var261，visitIincInsn内部会把context.var("i")强转成byte，（byte）261=5，于是实际上这一行会变成++var5，于是发生了上面的错误。

但是实际上代码里也有支持context.var("i")超出byte范围的逻辑，但是好像被注释掉了？

    public void visitIincInsn(final int var, final int increment) {
        // adds the instruction to the bytecode of the method
//        if ((var > 255) || (increment > 127) || (increment < -128)) {
//            code.putByte(196 /* WIDE */).put12(Opcodes.IINC, var).putShort(increment);
//        } else {
            code.putByte(132 /* Opcodes.IINC*/ ).put11(var, increment);
//        }
    }

	ByteVector put11(final int b1, final int b2) {
		int length = this.length;
		if (length + 2 > data.length) {
			enlarge(2);
		}
		final byte[] data = this.data;
		data[length++] = (byte) b1;
		data[length++] = (byte) b2;
		this.length = length;
		return this;
	}