How do I disable warnings across versions?

[Vincent Lefevre]

On 2012-05-14 15:59:27 -0700, Andy Lutomirski wrote:
> Unfortunately, the bogus warning is -Wuninitialized in gcc 4.6 and
> -Wmaybe-uninitialized in gcc 4.7.  The obvious way to silence the
> warning is to wrap it in:
> 
> #pragma GCC diagnostic push
> #pragma GCC diagnostic ignored "-Wuninitialized"
> #pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
> ...
> #pragma GCC diagnostic pop
> 
> It silences the original warning, but now gcc 4.6 says:
> warning: unknown option after ‘#pragma GCC diagnostic’ kind [-Wpragmas]
> 
> This seems to defeat the purpose, and adding
> #pragma GCC diagnostic ignored "-Wpragmas"
> is a little gross.  How am I supposed to do this?

I think that

#pragma GCC diagnostic ignored "-Wpragmas"

is exactly what you want. For instance,

#pragma GCC diagnostic ignored "-Wpragmas"
#pragma GCC diagnostic ignored "-Wuninitialized"
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#pragma GCC diagnostic ignored "-Wfoo"
#pragma GCC diagnostic warning "-Wpragmas"
#pragma GCC diagnostic ignored "-Wbar"

will just give a warning concerning -Wbar.

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Vincent Lefèvre <vincent@vinc17.net> - Web: <http://www.vinc17.net/>
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