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Re: How do I find when the diagnostic pragmas first came into gcc?
On 10 January 2011 21:35, Patrick Horgan wrote:
> I'm documenting the use of the diagnostic pragmas:
>
> |#pragma GCC diagnostic |kind option
> |#pragma GCC diagnostic push|
> |#pragma GCC diagnostic pop|
>
> on a boost page talking about how developers might deal with gcc warnings
> and was wondering how to figure out what test I could put into a #if that
> would avoid trying to use these pragmas in releases that did not support
> them yet.
>
> Something like:
>
> #if defined(__GNUC__)
> #pragma GCC diagnostic push
> #pragma GCC diagnostic ignored "-Wformat"
> #endif
>
> // code here that generates a spurious warning controlled by -Wformat
>
> #if defined(__GNUC__)
> #pragma GCC diagnostic pop
> #endif
You read the manual, obviously.
http://gcc.gnu.org/onlinedocs/
The Diagnostic Pragmas section in each release tells you what's supported:
http://gcc.gnu.org/onlinedocs/gcc-4.3.5/gcc/Diagnostic-Pragmas.html
http://gcc.gnu.org/onlinedocs/gcc-4.4.5/gcc/Diagnostic-Pragmas.html
http://gcc.gnu.org/onlinedocs/gcc-4.5.2/gcc/Diagnostic-Pragmas.html