bug#8845: build failure on HP-UX 11.31

[Jim Meyering]

Eric Blake wrote:
> On 06/13/2011 03:23 AM, Jim Meyering wrote:
>> +++ b/lib/file-set.h
>> @@ -6,7 +6,10 @@
>>
>>  extern void record_file (Hash_table *ht, char const *file,
>>                           struct stat const *stats)
>> -  __attribute__ ((nonnull (2, 3)));
>> +#if defined __GNUC__ && ((__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || __GNUC__ 
>> > 3)
>> +  __attribute__ ((nonnull (2, 3)))
>> +#endif
>> +;
>
> I'm not a fan of in-declaration #ifdefs; can we rewrite this to:
>
> #if defined __GNUC__ && ((__GNUC__ == 3 && __GNUC_MINOR__ >= 3) ||
> __GNUC__ > 3)
> # define ATTRIBUTE_NONNULL(a)  __attribute__ ((nonnull (a)))
> #else
> # define ATTRIBUTE_NONNULL(a) /* ignored */
> #endif
>
> extern void record_file (Hash_table *ht, char const *file,
>                          struct stat const *stats)
>   ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);

I feel the same way, but that definition would impinge on the name space
of any application that includes file-set.h.  IMHO, in this case,
name-space cleanliness trumps aesthetics, especially in a header
file that will rarely be read by a human.