为什么 Go 似乎无法识别 C 头文件中的 size_t ？
我正在尝试编写一个 Go 库，它将充当 C 库的前端。如果我的 C 结构之一包含 size_t，我会收到编译错误。 AFAIK size_t 是一个内置的 C 类型，那么为什么不去识别它呢？
我的头文件看起来像：
typedef struct mystruct
{
char * buffer;
size_t buffer_size;
size_t * length;
} mystruct;
我得到的错误是：
gcc failed:
In file included from <stdin>:5:
mydll.h:4: error: expected specifier-qualifier-list before 'size_t'
on input:
typedef struct { char *p; int n; } _GoString_;
_GoString_ GoString(char *p);
char *CString(_GoString_);
#include "mydll.h"
我什至尝试添加 // typedef unsigned long size_t 或 // #define size_t unsigned long 在#include 之前的 .go 文件，然后我得到“gcc 没有产生输出”。
I am trying to write a go library that will act as a front-end for a C library. If one of my C structures contains a size_t, I get compilation errors. AFAIK size_t is a built-in C type, so why wouldn't go recognize it?
My header file looks like:
typedef struct mystruct
{
char * buffer;
size_t buffer_size;
size_t * length;
} mystruct;
and the errors I'm getting are:
gcc failed:
In file included from <stdin>:5:
mydll.h:4: error: expected specifier-qualifier-list before 'size_t'
on input:
typedef struct { char *p; int n; } _GoString_;
_GoString_ GoString(char *p);
char *CString(_GoString_);
#include "mydll.h"
I've even tried adding // typedef unsigned long size_t or // #define size_t unsigned long in the .go file before the #include, and then I get "gcc produced no output".
I have seen these questions, and looked over the example with no success.
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根据 C99，§7.17，
size_t不是内置类型，而是在As per C99, §7.17,
size_tis not a builtin type but defined in<stddef.h>.最初的问题通过添加
#include得到解决 - 感谢 Ken 和 Georg。第二个问题是我的 Go 代码使用的是 mydll.mystruct 而不是 C.mystruct，因此根本没有使用 C 包。 cgo 编译器中存在一个错误，当导入 C 包但未使用时，会显示此错误消息。 cgo 错误已被修复（由其他人修复），以提供更有用的错误消息。
详细信息位于此处。
The original problem was solved by adding the
#include <stddef.h>- thanks Ken and Georg.The second problem was that my Go code was using
mydll.mystructrather thanC.mystruct, so the C package was not being used at all. There was a bug in the cgo compiler that displayed this error message when the C package was imported and not used. The cgo bug has been fixed (by someone else) to give a more useful error message.Details are here.
在 MSC 中，size_t 在 STDDEF.H 中定义（以及其他位置）。我怀疑您也会在 gcc 中找到它，因此您需要在库 (DLL) 源中添加对该标头的引用。
In MSC, size_t is defined (among other places) in STDDEF.H. I'd suspect that's where you'll find it in gcc as well, so you'll need to add a reference to that header in your library (DLL) source.