禁用Clang中特定警告实例的简便方法 [英] Concise way to disable specific warning instances in Clang

问题描述

假设我的代码中有一些警告，例如Clang已将填充添加到结构中.我发现有该特定实例，我想将其标记为已注​​意到；不要再对这个实例发出警告".

Suppose there is some warning in my code, e.g. that Clang has added padding to a struct. I am find with that particular instance and I want to mark it as "Noted; don't warn me about this instance again".

有没有办法做到这一点呢(不是 #pragma clang诊断推送等)?理想情况下，在警告的同一行中有类似注释的内容，例如:

Is there a way to do this that isn't insanely verbose (i.e. #pragma clang diagnostic push etc)? Ideally something like a comment on the same line as the warning, something like this:

// clang(-Wno-padded)

要清楚，我只想抑制警告的一个特定实例(通常需要 #pragma诊断推送/ pop )，而不是文件中的所有警告.

To be clear, I only want to suppress one specific instance of the warning (which normally requires #pragma diagnostic push/pop), not all warnings in the file.

推荐答案

如通过Pragmas控制诊断文章应该是:

#pragma clang diagnostic ignored "-Wno-padded"

如果要在特定代码段(单行代码或多条语句)中禁止显示警告，则需要利用 push / pop 机制:

If you want to suppress a warning in a certain chunk of code (be it a single line of code or multiple statements) then you need to utilize the push / pop mechanism:

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wno-padded"
// your code for which the warning gets suppressed 
#pragma clang diagnostic pop
// not suppressed here

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