如何在GCC中使用编译指示禁用所有警告 [英] How to disable all warnings using pragma directives in GCC

问题描述

我正在寻找一种方法来抑制所有可能通过pragma指令使用Gcc发出的警告.我制作了一些警卫宏，可帮助我使第三者标头从警告中消失，现在，它们就像msvc和clang的魅力一样工作.我仍然缺少使用Gcc诊断编译指示来抑制某个节中的每个警告的正确方法.让我给你举一些例子:

I am seeking for a way to suppress all possible warnings that i may get with Gcc with pragma directives. I had made some guard macros that help me silence 3rd party headers from warnings, and for now they work like charm for msvc and clang. I am still missing the correct way to use Gcc diagnostic pragmas in order to suppress every warning in a section. Let me give you some examples:

在msvc中，我们可以这样做:

In msvc we can do this:

#pragma warning(push, 0)
// Code that produces warnings...
#pragma warning(pop)

在clang中，我们可以这样做:

And in clang we can do this:

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wall"
#pragma clang diagnostic ignored "-Wextra"
// Code that produces warnings...
#pragma clang diagnostic pop

中间的代码现在已从警告中完全消失了.

And the code that is in the middle is now being silenced from warnings for good.

在Gcc中，我们对clang也有类似的编译指示，我认为我可以尝试这样的事情:

And in Gcc we also have similar pragma directives with clang and i thought i could try something like this:

#pragma GCC diagnostic push
#pramga GCC diagnostic ignored "-Wall"
#pragma GCC diagnostic ignored "-Wextra"
// Code that produces warnings...
#pramga GCC diagnostic pop

但是在GCC中在诊断中忽略的杂注中传递-Wall和-Wextra不能像clang一样起作用，并且不会禁用所有可能的警告.而不是通过特定的警告来禁用作品:

But passing -Wall and -Wextra in diagnostic ignored pragma in GCC does not work like clang, and does not disable all the possible warnings. Instead of this passing a specific warning to disable works:

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
void foo (int x) // No longer getting "unused parameter 'x'" warning
{
}
#pragma GCC diagnostic pop

因此，到目前为止，我唯一能想到的解决方法是列出所有GCC警告标志，并像上面一样使用它们.有没有更优雅的解决方案?如果没有，我可以在哪里获得完整的Gcc警告标志列表(最好在普通列表中)?

So the only workaround i can think so far is to make a long list with all the GCC warning flags and use them like above. Is there a more elegant solution? If not where i can get the complete Gcc warning flag list (favorably in a plain list)?

推荐答案

文档说:

目前只能控制警告(通常由"-W ..."控制)，并且并非全部.使用 -fdiagnostics-show-option 确定哪些诊断是可控制的，以及由哪些选项控制.

At the moment only warnings (normally controlled by ‘-W...’) can be controlled, and not all of them. Use -fdiagnostics-show-option to determine which diagnostics are controllable and which option controls them.

这篇关于如何在GCC中使用编译指示禁用所有警告的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！