gcc 编译,程序中不支持定义结构么?eg::

pxinyu

#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>

void main()
{
    struct msgbuf tt;
    long lType;
    memset(&tt,0x00,sizeof(tt));
    pp=&tt;
    lType=tt.mtype;
    lType=pp->mtype;

}
~
编译指令:gcc -c  ipc_test.c
错误提示:
ipc_test.c: In function `main':
ipc_test.c:7: storage size of `tt' isn't known
ipc_test.c:10: `pp' undeclared (first use in this function)
ipc_test.c:10: (Each undeclared identifier is reported only once
ipc_test.c:10: for each function it appears in.)

pxinyu

以前没在 linux 上写过程序 ,在sco .true64 都没有该问题?是不是我搞错了什么地方?请求帮助?

mq110

sys/msg.h defines struct msgbuf as a template for the struct to be used as the argument for msgsnd and msgrcv

#include <stdio.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <string.h>

struct msgbuf{
    int mtype;
    char mtext[1];
}tt,*pp;

int main()
{
    long lType;
    memset(&tt,0x00,sizeof(tt));
    pp=&tt;
    lType=tt.mtype;
    lType=pp->mtype;
    return 0;
}

pxinyu

多谢指导!