Question

如果以前曾经问过，我道歉。

通过make编译时出现以下错误：

.../inc/intModIp.h:418: error: field 'cnc_id' has incomplete type
../inc/intModIp.h:419: error: field 'cnc_key' has incomplete type
../inc/intModIp.h:421: error: field 'fin_id' has incomplete type
../inc/intModIp.h:422: error: field 'fin_key' has incomplete type
../inc/intModIp.h:424: error: field 'remote_id' has incomplete type
../inc/intModIp.h:426: error: field 'cnc_ipsec_peer' has incomplete type
../inc/intModIp.h:427: error: field 'fin_ipsec_peer' has incomplete type
../inc/intModIp.h:428: error: field 'remote_ipsec_peer' has incomplete type
../inc/intModIp.h:430: error: field 'cnc_link' has incomplete type
../inc/intModIp.h:431: error: field 'cnc_esp' has incomplete type
../inc/intModIp.h:433: error: field 'fin_link' has incomplete type
../inc/intModIp.h:434: error: field 'fin_esp' has incomplete type

头文件中的相应代码如下：

#if 1 || defined(SYMB_IPSEC)
    struct ipsec_state {
        int enabled;
        int active;
        int timer;
/* IPSEC_SOCKET_STATES */

        struct ipsec_id cnc_id;
        struct ipsec_priv_key cnc_key;

        struct ipsec_id fin_id;
        struct ipsec_priv_key fin_key;

        struct ipsec_id remote_id;

        struct ipsec_peer cnc_ipsec_peer;
        struct ipsec_peer fin_ipsec_peer;
        struct ipsec_peer remote_ipsec_peer;

        struct ipsec_ike_link cnc_link;
        struct ipsec_esp_sa cnc_esp;

        struct ipsec_ike_link fin_link;
        struct ipsec_esp_sa fin_esp;
    } ipsec;
#endif

有人可以帮我解决这个问题。如果需要任何其他信息，请告诉我。

谢谢，晴天

Answer 1

问题可能是所有这些结构都被宣布为前进。

struct ipsec_state之后是否包含标题？：

/ * a.h * /

struct a {
    int i;
};

/ * demo.c * /

struct b {
    struct a A;
};

#include "a.h"

int main(void)
{
    return 0;
}

输出：

david@debian:~$ gcc -std=c99 -Wall -pedantic -W -Wextra -o demo demo.c
demo.c:2:11: error: field ‘A’ has incomplete type

Answer 2

编译器找不到声明的结构定义（ipsec_id ... ipsec_esp_sa），您可能需要包含相关的头文件

Answer 3

该错误的一个来源（字段具有不完整类型）是在别名（通过typedef定义的变量）前面使用struct关键字时。尝试删除struct关键字。

Answer 4

为结构成员添加指针。

struct ipsec_state {
        int enabled;
        int active;
        int timer;
/* IPSEC_SOCKET_STATES */

        struct ipsec_id *cnc_id;
        struct ipsec_priv_key *cnc_key;

        struct ipsec_id *fin_id;
        struct ipsec_priv_key *fin_key;

        struct ipsec_id *remote_id;

        struct ipsec_peer *cnc_ipsec_peer;
        struct ipsec_peer *fin_ipsec_peer;
        struct ipsec_peer *remote_ipsec_peer;

        struct ipsec_ike_link *cnc_link;
        struct ipsec_esp_sa *cnc_esp;

        struct ipsec_ike_link *fin_link;
        struct ipsec_esp_sa *fin_esp;
    } ipsec;
#endif

C：字段类型不完整

4 个答案: