>> BTW, it is way wrong that /dev/zero should be needed at all.
>> Such use is undocumented ("man zero", "man mmap") anyway, and
>> AFAIK one should use mmap() with MAP_ANON instead. Not that
>> the documentation on MAP_ANON is any good either, but at least
>> the mere existence of the flag is mentioned.
>
> RTFM(POSIX).
No manual entry for RTFM in section POSIX
Seriously:
1. both features ought to be documented in the man pages
(I did submit a man page too, back in 1996)
2. it is slow and nasty to open /dev/zero for getting memory
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