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Add recallocarray() and freezero() from OpenBSD

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Add recallocarray(), introduced in OpenBSD 6.1, and freezero(),
introduced in OpenBSD 6.2. The former is imported as-is from OpenBSD,
while the latter is the non-malloc-internal branch of the same code (and
also the OpenSSH portable variant).

Both of these originated in OpenBSD, but have also been implemented by
IllumOS, cf. https://www.illumos.org/issues/8546

Documentation for these functions is in malloc(3) upstream, the relevant
parts of which were previously imported in reallocarray(3bsd). Update
reallocarray(3bsd) with the changes that were introduced since, and add
the relevant bits for recallocarray() and freezero(), plus aliases.

[guillem@hadrons.org: Update copyright in COPYING. ]

Closes: !10
Signed-off-by: Guillem Jover <guillem@hadrons.org>
This commit is contained in:
Faidon Liambotis
2020-12-31 12:46:03 +02:00
committed by Guillem Jover
parent 9c85d828a1
commit 01f0d1ea1e
10 changed files with 354 additions and 43 deletions
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2
include/bsd/stdlib.h
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@@ -75,6 +75,8 @@ void *reallocf(void *ptr, size_t size);
(defined(__GLIBC__) && (!__GLIBC_PREREQ(2, 26) || !defined(_GNU_SOURCE)))
void *reallocarray(void *ptr, size_t nmemb, size_t size);
#endif
void *recallocarray(void *ptr, size_t oldnmemb, size_t nmemb, size_t size);
void freezero(void *ptr, size_t size);
long long strtonum(const char *nptr, long long minval, long long maxval,
const char **errstr);