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libdns: Avoid using compound literals (5).

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* dirmngr/dns.h (dns_rr_foreach): Don't use dns_rr_i_new.
Call dns_rr_grep with NULL.
* dirmngr/dns.c (dns_rr_grep): Support NULL for error_.

--

Here we still use C99 feature of struct member initialization in
dns_rr_foreach, for struct dns_rr_i.  Note that in C99, it guarantees
non-specified member fields are initialized by zero.  So, there's no
need to use dns_rr_i_new at all.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2019-02-26 11:43:10 +09:00
parent 7313a112f9
commit a1ccfe2b37
2 changed files with 3 additions and 2 deletions
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1
dirmngr/dns.c
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@ -3266,6 +3266,7 @@ unsigned dns_rr_grep(struct dns_rr *rr, unsigned lim, struct dns_rr_i *i, struct
return count;
error:
if (error_)
*error_ = error;
return count;

2
dirmngr/dns.h
View File

@ -542,7 +542,7 @@ DNS_PUBLIC struct dns_rr_i *dns_rr_i_init(struct dns_rr_i *, struct dns_packet *
DNS_PUBLIC unsigned dns_rr_grep(struct dns_rr *, unsigned, struct dns_rr_i *, struct dns_packet *, int *);
#define dns_rr_foreach_(rr, P, ...) \
for (struct dns_rr_i DNS_PP_XPASTE(i, __LINE__) = *dns_rr_i_new((P), __VA_ARGS__); dns_rr_grep((rr), 1, &DNS_PP_XPASTE(i, __LINE__), (P), &(int){ 0 }); )
for (struct dns_rr_i DNS_PP_XPASTE(i, __LINE__) = { __VA_ARGS__ }; dns_rr_grep((rr), 1, &DNS_PP_XPASTE(i, __LINE__), (P), NULL); )
#define dns_rr_foreach(...) dns_rr_foreach_(__VA_ARGS__)