[Off-topic] Wrote the suppressing warnings for GCC section of boost wiki page on Warning Guidelines

Patrick Horgan phorgan1@yahoo.com
Sat Jan 15 03:42:00 GMT 2011

On 01/14/2011 03:16 PM, Jonathan Wakely wrote:
> On 14 January 2011 22:05, Patrick Horgan wrote:
>> I added a section to the boost warnings guidelines page about suppressing
>> warnings with GCC.  I think it's pretty good bringing together information I
>> got on this list, from reading the source and from browsing through the
>> documentation for various releases of GCC.  If anyone wants to check it for
>> correctness I would be very appreciative.  I would in particular like to
>> thank Jonathan Wakely for his willingness to help and for the great help he
>> gave me on this list.
>> https://svn.boost.org/trac/boost/wiki/Guidelines/WarningsGuidelines
>> If you scroll to the bottom directly you'll see the end of the section on
>> suppressing GCC warnings.
> In the example:
>      GCC_DIAG_OFF(sign-compare);
>      if(a<  b){
>      GCC_DIAG_ON(sign-compare);
> It might be worth mentioning that example assumes GCC 4.6, so the
> macros work at function-scope (my fault for the bad example.)
> And later on, it says "they risk future collision with GCC macros"
> While I agree that macros should be named to avoid collisions, macros
> defined by GCC will use the reserved namespace, i.e. begin with one or
> two underscores followed by an uppercase letter, e.g. __GNUC__,
Thanks, fixed both of these things.


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