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tzcode: Address some compiler warnings.

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MFC after:	1 week
Sponsored by:	Klara, Inc.
This commit is contained in:
Dag-Erling Smørgrav 2023-01-10 20:20:11 +01:00
parent bc42155199
commit d5c85ac652
2 changed files with 22 additions and 26 deletions
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9
contrib/tzcode/zdump.c
View File

@ -134,16 +134,15 @@ size_overflow(void)
/* Return A + B, exiting if the result would overflow either ptrdiff_t
or size_t. */
static ATTRIBUTE_REPRODUCIBLE ptrdiff_t
static ATTRIBUTE_REPRODUCIBLE size_t
sumsize(size_t a, size_t b)
{
#ifdef ckd_add
ptrdiff_t sum;
if (!ckd_add(&sum, a, b) /* && sum <= SIZE_MAX */)
size_t sum;
if (!ckd_add(&sum, a, b))
return sum;
#else
ptrdiff_t sum_max = min(PTRDIFF_MAX, SIZE_MAX);
if (a <= sum_max && b <= sum_max - a)
if (a <= SIZE_MAX && b <= SIZE_MAX - a)
return a + b;
#endif
size_overflow();

39
contrib/tzcode/zic.c
View File

@ -474,40 +474,38 @@ size_overflow(void)
memory_exhausted(_("size overflow"));
}
static ATTRIBUTE_REPRODUCIBLE ptrdiff_t
static ATTRIBUTE_REPRODUCIBLE size_t
size_sum(size_t a, size_t b)
{
#ifdef ckd_add
ptrdiff_t sum;
if (!ckd_add(&sum, a, b) /* && sum <= SIZE_MAX */)
size_t sum;
if (!ckd_add(&sum, a, b))
return sum;
#else
ptrdiff_t sum_max = min(PTRDIFF_MAX, SIZE_MAX);
if (a <= sum_max && b <= sum_max - a)
if (b <= SIZE_MAX - a)
return a + b;
#endif
size_overflow();
}
static ATTRIBUTE_REPRODUCIBLE ptrdiff_t
size_product(ptrdiff_t nitems, ptrdiff_t itemsize)
static ATTRIBUTE_REPRODUCIBLE size_t
size_product(size_t nitems, size_t itemsize)
{
#ifdef ckd_mul
ptrdiff_t product;
if (!ckd_mul(&product, nitems, itemsize) /* && product <= SIZE_MAX */)
size_t product;
if (!ckd_mul(&product, nitems, itemsize))
return product;
#else
ptrdiff_t nitems_max = min(PTRDIFF_MAX, SIZE_MAX) / itemsize;
if (nitems <= nitems_max)
if (nitems <= SIZE_MAX / itemsize)
return nitems * itemsize;
#endif
size_overflow();
}
static ATTRIBUTE_REPRODUCIBLE ptrdiff_t
align_to(ptrdiff_t size, ptrdiff_t alignment)
static ATTRIBUTE_REPRODUCIBLE size_t
align_to(size_t size, size_t alignment)
{
ptrdiff_t lo_bits = alignment - 1, sum = size_sum(size, lo_bits);
size_t lo_bits = alignment - 1, sum = size_sum(size, lo_bits);
return sum & ~lo_bits;
}
@ -1269,7 +1267,10 @@ get_rand_u64(void)
s = getrandom(entropy_buffer, sizeof entropy_buffer, 0);
while (s < 0 && errno == EINTR);
nwords = s < 0 ? -1 : s / sizeof *entropy_buffer;
if (s < 0)
nwords = -1;
else
nwords = s / sizeof *entropy_buffer;
}
if (0 < nwords)
return entropy_buffer[--nwords];
@ -3991,9 +3992,7 @@ mkdirs(char const *argname, bool ancestors)
#include <pwd.h>
static void
setgroup(flag, name)
gid_t *flag;
const char *name;
setgroup(gid_t *flag, const char *name)
{
struct group *gr;
@ -4019,9 +4018,7 @@ setgroup(flag, name)
}
static void
setuser(flag, name)
uid_t *flag;
const char *name;
setuser(uid_t *flag, const char *name)
{
struct passwd *pw;