C结构为void *指针 [英] C struct to void* pointer

问题描述

我有一个结构定义为：

typedef struct {
   int type;
   void* info;
} Data;

然后我有我想要分配到的void *使用下面的函数其他几个结构：

and then i have several other structs that i want to assign to the void* using the following function:

Data* insert_data(int t, void* s)
{
    Data * d = (Data*)malloc(sizeof(Data));
    d->type = t;
    d->info = s;

    return d;
}

struct {
   ...
} Struct#;

然后我就打电话

insert_data(1, variable_of_type_Struct#);

当我编译这个它会发出警告

When i compile this it gives a warning

warning: assignment from incompatible pointer type

我试着投变量在插入到（void *的），但没有奏效。

i tried to cast the variable in the insert to (void*) but didn't work

insert_data(1, (void *) variable_of_type_Struct#);

我

如何才能摆脱这种警告？

How can i get rid of this warning?

感谢

推荐答案

在传递的结构，而不是它的一个副本（即不按值传递）地址：

Pass in the address of the struct, not a copy of it (i.e. not passed by value):

insert_data(1, &variable_of_type_Struct);

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