validate fails

[Manuel M T Chakravarty]

Simon Marlow:
> Manuel M T Chakravarty wrote:
>> Trying to validate the HEAD on MacOS 10.5 fails with
>> ../compiler/ghc-inplace -optc-Werror -optc-Wall -optc-W -optc- 
>> Wstrict-prototypes -optc-Wmissing-prototypes -optc-Wmissing- 
>> declarations -optc-Winline -optc-Waggregate-return -optc-I../ 
>> includes -optc-I. -optc-Iparallel -optc-Ism -optc-DCOMPILING_RTS - 
>> optc-fomit-frame-pointer -optc-I../gmp/gmpbuild -optc-fno-strict- 
>> aliasing -Werror -H64m -Onot -fasm -optc-O2 -I../includes -I. - 
>> Iparallel -Ism -DCOMPILING_RTS -package-name rts -static -I../gmp/ 
>> gmpbuild -I. -#include HCIncludes.h -dcmm-lint     -c sm/ 
>> BlockAlloc.c -o sm/BlockAlloc.o
>> cc1: warnings being treated as errors
>> posix/OSMem.c: In function 'my_mmap':
>> posix/OSMem.c:96:0:
>>     warning: 'err' may be used uninitialized in this function
>> make[1]: *** [posix/OSMem.o] Error 1
>> make[1]: *** Waiting for unfinished jobs....
>> make: *** [stage1] Error 1
>> This is MacOS 10.5 aka Leopard, so maybe it is an OS dependency.   
>> Does it work elsewhere or was the file not warning cleaned?
>
> That looks like a warning from some darwin-specific code.  In fact,  
> it looks a real bug!  Could you try
>
> -    kern_return_t err;
> +    kern_return_t err = 0;
>
> and let me know if that makes validate go through for you?  (feel  
> free to just push if so).

That does fix it.  I pushed a patch.

Cheers!
Manuel