错误:将指针延迟到不完整类型
错误:将指针延迟到不完整类型
提问于 2016-03-23 05:56:59
我见过这个问题/错误很多，但我就是搞不清是什么问题。我创建了一个包含一些关于线程的信息的结构，基本上我想分配一些值(线程号，当前线程.每次我创建一个线程。线程与此错误无关。到目前为止，我只是试图使我的结构工作，但我一直收到一个错误，因为我将指针延迟到不完整类型的
thread->num=num;
是内存分配错误吗？或者有线索吗？这是我的代码：
C //没有给我任何错误
struct sPRIME_THREAD *new_thread = create_thread(1,0,0,20);
printf("Thread Info:\n");
print_info(new_thread);header.h
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
/* Macro definitions */
#define MAX_THREADS 5 // Maximum number of prime search threads
/* Data types */
typedef struct // Prime search thread data
{
unsigned int num; // Prime search thread number
unsigned int current; // Number currently evaluating for primality
unsigned int low; // Low end of range to test for primality
unsigned int high; // High end of range to test for primality
} sPRIME_THREAD;
/* Shared global variables */
extern sPRIME_THREAD primeThreadData[MAX_THREADS]; // Prime search thread data
int numThreads; // Number of prime search threads
struct sPRIME_THREAD *create_thread(unsigned int num, unsigned int current,
unsigned int low, unsigned int high)
{
struct sPRIME_THREAD *thread = (sPRIME_THREAD *)malloc(sizeof(sPRIME_THREAD));
thread->num = num;
thread->current = current;
thread->low = low;
thread->high = high;
return thread;
}
void destroy_thread(struct sPRIME_THREAD *thread)
{
free(thread);
}
void print_info(struct sPRIME_THREAD *thread)
{
printf("Num: %d\n", thread->num);
printf("Current: %d\n", thread->current);
printf("Low: %d\n", thread->low);
printf("High: %d\n", thread->high);
}回答 2
Stack Overflow用户
回答已采纳
发布于 2016-03-23 06:17:06
struct sPRIME_THREAD是未定义的。通过执行typedef struct {...} sPRIME_THREAD;，您只需将匿名struct定义为sPRIME_THREAD类型。
若要修复此下拉列表，请使用ty胡枝子f
typedef struct
{
unsigned int num;
unsigned int current;
unsigned int low;
unsigned int high;
} sPRIME_THREAD;定义struct类型
struct sPRIME_THREAD
{
unsigned int num;
unsigned int current;
unsigned int low;
unsigned int high;
};在引用类型时始终使用struct sPRIME_THREAD。
Stack Overflow用户
发布于 2016-03-23 06:05:15
如果您使用的是struct关键字，则无需使用typedef关键字。参考胡枝子f
看看这个
/* Data types */
typedef struct // Prime search thread data
{
unsigned int num; // Prime search thread number
unsigned int current; // Number currently evaluating for primality
unsigned int low; // Low end of range to test for primality
unsigned int high; // High end of range to test for primality
} sPRIME_THREAD;
/* Shared global variables */
extern sPRIME_THREAD primeThreadData[MAX_THREADS]; // Prime search thread data
int numThreads; // Number of prime search threads
sPRIME_THREAD *create_thread(unsigned int num, unsigned int current,
unsigned int low, unsigned int high)
{
sPRIME_THREAD *thread = (sPRIME_THREAD *)malloc(sizeof(sPRIME_THREAD));
thread->num = num;
thread->current = current;
thread->low = low;
thread->high = high;
return thread;
}
void destroy_thread(sPRIME_THREAD *thread)
{
free(thread);
}
void print_info(sPRIME_THREAD *thread)
{
printf("Num: %d\n", thread->num);
printf("Current: %d\n", thread->current);
printf("Low: %d\n", thread->low);
printf("High: %d\n", thread->high);
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/36170799
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