C语言中怎么会有单独出现的大括号？
CLASS aos_vcf_svc EXTENDS(aos_svc)
//struct aos_svc super;
//------special for vcf------
//struct v_channel * channel;
aos_svc_indicate_func indicate;
struct aos_v_channel_env * v_env;
struct aos_over_vcf_svc * upper_layer;
unsigned int _send_frm_cnt;
unsigned int _rev_frm_cnt;
unsigned int weight;
unsigned int privilege;
BOOL is_vcdu;

//struct aos_vcf_svc* next;
};


这是那一段代码，把最后一个大括号去了就会出错，不去就可以编译通过，并且没有与这个大括号配对的括号

[解决办法]
CLASS
EXTENDS
这两个应该是宏吧，应该是某个里面包含了{