我如何隐藏“已定义但未使用”海湾合作委员会的警告？ [英] How can I hide "defined but not used" warnings in GCC?

问题描述

  CASSERT（isTrue）或CASSERT2（isTrue，prefix_） 
  

在使用GCC进行编译时，我收到许多警告，例如'prefix_LineNumber'使用。有没有办法隐藏编译时断言的警告？我没有找到GCC文档的运气。我想我可能会在同一个宏中自动使用全局变量，但我想不出有什么办法做到这一点。

有谁知道隐藏的方法在GCC中发出警告？

解决方案

刚刚查看此线程时搜索此问题的解决方案。我在这里发布完整的解决方案，我发现...

GCC编译器标志，控制未使用 warnings 包括：

  -Wunused-function 
 -Wunused-label 
 -Wunused-parameter 
 -Wunused-value 
 -Wunused-variable 
 -Wunused（=上述全部）
  

每一个都有一个相应的否定形式，在关闭警告的W后插入no-例如，由-Wall打开）。因此，你应该使用

  -Wno-unused-function 
  

当然这适用于整个代码，而不仅仅是编译时断言。对于特定于功能的行为，请查看功能属性。

I have a bunch of compile time asserts, such as:

CASSERT(isTrue) or CASSERT2(isTrue, prefix_)

When compiling with GCC I get many warnings like 'prefix_LineNumber' defined but not used. Is there a way I can hide warnings for compile time asserts? I had no luck searching the GCC documentation. I thought I might have the var automatically used globally inside the same macro but I couldn't think of any way to do it.

Does anyone know of a way to hide that warning in GCC?

解决方案

Just saw this thread while searching for solutions to this problem. I post here for completeness the solution I found...

The GCC compiler flags that control unused warnings include:

-Wunused-function
-Wunused-label
-Wunused-parameter
-Wunused-value
-Wunused-variable
-Wunused (=all of the above)

Each of these has a corresponding negative form with "no-" inserted after the W which turns off the warning (in case it was turned on by -Wall, for example). Thus, in your case you should use

-Wno-unused-function

Of course this works for the whole code, not just compile-time asserts. For function-specific behaviour, have a look at Function attributes.

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