On Thu, 10 Dec 2015, Hajimu UMEMOTO wrote:
On Wed, 9 Dec 2015 18:19:16 +1100 (EST)
Bruce Evans <b...@optusnet.com.au> said:
brde> resolv.h already had massinve namespace pollution and style bugs in
brde> its includes. One more include of a header that is relatively clean
brde> since it is tiny and was designed for minimising namespace pollution
brde> makes little difference.
I understood. Thank you for your detailed explanation.
However, I realized that r289315 changed the size of struct
__res_state. It broke binary backward compatibility. I think we
still need to revert its change in struct __res_state and move them
into struct __res_state_ext.
I see.
Most of the pollution in resolv.h dates from 1993, so is hard to fix
now. It was not in 4.4BSD. In 4.4BSD, <stdio.h> was a prerequisite,
and undocumented APIs like fp_query() that used FILE were named with
leading underscores. The ABI changes in __res_state are mostly newer
than than 1993.
Bruce
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