c ++;警告“默认启用”是什么？是指编译期间？ [英] c++; What does the warning "enabled by default" mean during compile?

问题描述

我的代码编译没有错误，但这是什么意思？

  etherate.cpp：432：11：警告：删除数组'unsigned char broadMAC [6]'[默认启用] 
  

从这行开始，正在删除未签名的字符数组；

  delete [] broadMAC; 
  

是否可以保留原样，如果没有，我该如何改善？ / p>

谢谢。

更新

broadMAC如何声明？

从大约10行开始；

  unsigned char broadMAC [6] = {destMAC [0]，destMAC [1]，destMAC [2]，destMAC [3]，destMAC [4]，destMAC [5]}； 
  

destMAC也是一个无符号字符数组，内部存储有值。
我需要将它们复制出来，使用destMAC进行某些操作，然后恢复原始值；因此，我声明了broadMAC并希望在以后将其删除。

解决方案

G ++允许启用和禁用许多警告（例如 -Wctor-dtor-privacy ， -Woverloaded-virtual ， -W ... ），方法是在命令行上指定它们。某些警告已启用，而无需在命令行上启用，则必须显式请求其他警告。

因此，一些警告为：

默认启用

其中一些是：

默认情况下已禁用

My code compiles without error, but what does this mean?

 etherate.cpp:432:11: warning: deleting array ‘unsigned char broadMAC [6]’ [enabled by default]

Its from this line, where I am deleting an unsigned char array;

delete [] broadMAC;

Is it OK to leave this as it is, if not, how could I improve upon this?

Thanks.

UPDATE

How is broadMAC declared?

From about 10 lines previous;

unsigned char broadMAC[6] = {destMAC[0], destMAC[1], destMAC[2], destMAC[3], destMAC[4], destMAC[5]};

destMAC is also an unsigned char array with values stored inside it. I needed to copy them out, do something with destMAC, then restore the original values; so I have declared broadMAC and wish to delete it after.

解决方案

G++ allows to enable and disable many warnings (e.g. -Wctor-dtor-privacy, -Woverloaded-virtual, -W...) by specifying them on the command line. Some warnings are enabled, without the need to do so on the command line, others must be explicitly requested.

So, some warnings are:

"enabled by default"

and some are:

"disabled by default"

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