[질문] 이 소스에 머가 문제가 있어서.. 메시지큐가 작살이 날까요.. ㅠㅠ

#include  < stdio.h>
#include  < stdlib.h>
#include  < pthread.h>
#include  < unistd.h>
#include  < sys/ipc.h>
#include  < sys/msg.h>
#include  < sys/types.h>
 
#define QKEY	(key_t)0102
#define QPERM	0660
 
struct buffers{
	long mtype;
	char buf[100];
	int value;
};
 
 
void *threadFunction(void *data)
{
	int cons = *((int*)data);
	struct buffers test2;
	int queue_id;
 
	cons *=2;
	printf("[c] I send this value %d",cons);
 
	if ( (queue_id = msgget(QKEY, IPC_CREAT | QPERM)) <0 )
	{
		perror("msgget() error");
		exit(1);
	}
 
	test2.value = cons;
 
 
	if ( msgsnd(queue_id, &test2, sizeof(struct buffers) - sizeof(long), 0) < 0 )
	{
		perror("msgsnd() error");
		exit(1);
	}
 
	printf("[c] I die!\n");
}
 
int main()
{
	pthread_t thread;
	int value= 5000;
	int thr_id;
	int queue_id;
	int status;
	struct buffers test;
 
 
	if ( (queue_id = msgget(QKEY, IPC_CREAT | QPERM)) <0 )
	{
		perror("msgget() error");
		exit(1);
	}
 
	thr_id = pthread_create(&thread , NULL, threadFunction, (void *)&value );
	if ( thr_id <0 )
	{
		perror("pthread_create error : ");
		exit(1);
	}
 
	while(1)
	{
		if ( msgrcv(queue_id, &test, sizeof(struct buffers) - sizeof(long), 0, 0) < 0)
		{
			perror("msgrcv error : ");
			exit(1);
		}
		else
		{
			printf("somebody send %d\n",test.value);
			break;
		}
	}
 
 
 
	printf("waiting to die child\n");
	pthread_join(thread, (void **)&status);
	printf("return thread 0 is %d\n", status);
 
	return 0;
}