c - 仍然是 "error: expected ‘=’、 ‘,’、 ‘;’、 ‘asm’ 或 ‘__attribute__’ token 之前的 ‘*’”

Question

这是一个说明问题的小型纯 C 程序。该程序什么都不做；它是一个存在相同问题的大型程序的精简版。

场景如下:

Mac OS X 狮子；

gcc 版本 i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1(基于 Apple Inc. build 5658)(LLVM build 2335.15.00)；

示例代码:

#include <stdlib.h>
#include <stdio.h>

char huge *pbA;
char huge *pbB;

int main(int argc,char *argv[])
{
    pbA = (char huge *)farmalloc(2);
    pbB = pbA;
    *(pbB++) = 'A';
    return( 0 );
}

编译命令:

gcc -c -Wall -O -g -pipe  -D_SDL myTest.c

错误信息:

myTest.c:4: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token
myTest.c:5: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token
myTest.c: In function ‘main’:
myTest.c:10: error: ‘pbA’ undeclared (first use in this function)
myTest.c:10: error: (Each undeclared identifier is reported only once
myTest.c:10: error: for each function it appears in.)
myTest.c:10: error: expected ‘)’ before ‘huge’
myTest.c:10: warning: implicit declaration of function ‘farmalloc’
myTest.c:11: error: ‘pbB’ undeclared (first use in this function)

那么，我错过了什么？

Answer 1

我不确定是什么/在哪里huge是，但编译器无法在您提供的内容中找到它(即您可能缺少标题)。至于farmalloc ，看起来在 <alloc.h> 中.现在关于使用这些，another site 上有一个答案。对于 huge :

Keywords like near/far/huge were once used as memory models in the old MSDOS 
days when computers had a max of 640K memory.

Any machine built in the last 15 years does not have that restriction so 
unless you have a real issue where you have to use really obsolete hardware, 
I would not spend time with segmented memory model syntax.

huge ，可能还有 farmalloc同样，今天的标准似乎已弃用(就像远指针与近指针一样)。仅使用 char *和 malloc应该是你所需要的；没有奇怪的旧 header 。