用g ++ 4.1发出奇怪的警告 [英] weird warning with g++ 4.1

问题描述

以下程序无法使用g ++ 4.1.1编译：

=========================== ======================= ==

// $ Id $

// $来源$


#include< stdint.h>

#include< stdio.h>


typedef struct {uint32_t one_c; }图表;

#define as_chart（c）（（chart）{one_c：（c）}）

#define ascii（x）as_chart（（uint8_t）（x ））

#define CR 13

#define LF 10

static void wr_ch_unbuffered_dos（void）{

静态图表const crlf [2] = {ascii（CR），ascii（LF）};

for（int i = 0; i< 2; i ++）

printf（"％d \ n"，crlf [i] .one_c）;

}


int main（int argc，char * argv []）{

printf（"％d％s \ n"，argc，argv [0]）;

wr_ch_unbuffered_dos（）;

返回0;

}

========================= ========================= ==

cpp-struct.cc：在函数''void wr_ch_unbuffered_dos（）' '：

cpp-struct.cc:14：警告：'const chart'初始化器周围缺少括号

cpp-struct.cc:14：警告：缺失''常量表'初始化器周围的大括号'

cpp-struct.cc:14：错误：无法转换''图表''初始化''uint32_t''

cpp-struct.cc:14：错误：初始化时无法将''chart''转换为'uint32_t''


坏线是

静态图表const crlf [2] = {ascii（CR），ascii（LF）};


我很漂亮确定这样的代码适用于g ++ 3.

我现在该怎么办？

谢谢！


$ g ++ --version

g ++（GCC）4.1.1 20060525（Red Hat 4.1.1-1）


-

Sam Steingold（关于Fedora Core发布的 http://www.podval.org/~sds ） 5（波尔多）
http://palestinefacts.org http://camera.org http://truepeace.org
http： //israelunderattack.slide.com http://dhimmi.com http://pmw.org.il

无纸化办公将成为现实无纸化马桶后不久。

解决方案

Id

//

来源

the following program does not compile with g++ 4.1.1:
================================================== ==
// $Id$
// $Source$

#include <stdint.h>
#include <stdio.h>

typedef struct { uint32_t one_c; } chart;
#define as_chart(c) ((chart){one_c:(c)})
#define ascii(x) as_chart((uint8_t)(x))
#define CR 13
#define LF 10

static void wr_ch_unbuffered_dos (void) {
static chart const crlf[2] = { ascii(CR), ascii(LF) };
for (int i = 0; i < 2; i++)
printf("%d\n",crlf[i].one_c);
}

int main (int argc, char *argv[]) {
printf("%d %s\n",argc,argv[0]);
wr_ch_unbuffered_dos();
return 0;
}
================================================== ==
cpp-struct.cc: In function ''void wr_ch_unbuffered_dos()'':
cpp-struct.cc:14: warning: missing braces around initializer for ''const chart''
cpp-struct.cc:14: warning: missing braces around initializer for ''const chart''
cpp-struct.cc:14: error: cannot convert ''chart'' to ''uint32_t'' in initialization
cpp-struct.cc:14: error: cannot convert ''chart'' to ''uint32_t'' in initialization

the bad line is
static chart const crlf[2] = { ascii(CR), ascii(LF) };

I am pretty sure code like this worked with g++ 3.
What do I do now?
Thanks!

$ g++ --version
g++ (GCC) 4.1.1 20060525 (Red Hat 4.1.1-1)

--
Sam Steingold (http://www.podval.org/~sds) on Fedora Core release 5 (Bordeaux)
http://palestinefacts.org http://camera.org http://truepeace.org
http://israelunderattack.slide.com http://dhimmi.com http://pmw.org.il
The paperless office will become a reality soon after the paperless toilet.

解决方案

Id

//

Source

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