Re: windows consolidated cleanup

On 04/24/2011 09:11 AM, Andrew Chernow wrote:
> On 4/24/2011 1:29 AM, Andrew Dunstan wrote:
>>
>> The attached patch is intended to clean up a bunch of compiler 
>> warnings seen on
>> Windows due to mismatches of signedness or constness, unused variables,
>> redefined macros and a missing prototype.
>>
>> It doesn't clean up all the warnings by any means, but it fixes quite 
>> a few.
>>
>> One thing I'm a bit confused about is this type of warning:
>>
>> src\backend\utils\misc\guc-file.c(977): warning C4003: not enough actual
>> parameters for macro 'GUC_yywrap'
>>
>>
>> If someone can suggest a good fix That would be nice.
>>
>
> The macro is defined as taking one argument.
>
> // guc-file.c line 354
> #define GUC_yywrap(n) 1
>
> The macro is overriding the prototype declared at line 627, which has 
> a void argument list (assuming YY_SKIP_YYWRAP is !defined).  Since all 
> code references to this do not provide an argument, I'd say the macro 
> is incorrect.

Thanks for looking.

All our scanners are in fact defined with "%option noyywrap", so 
YY_SKIP_WRAP is defined.

But the macro is incorrect unless you're generating a reentrant scanner 
as we are for the core scanner (which is why we don't see this error for 
the core scanner, only all the others).

I have a mildly ugly fix for it in pg_flex.bat (only MSVC compilers 
complain about it AFAIK).

cheers

andrew