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pass constants as first argument to st_mult()

The result of st_mult() is the same no matter the order of its
arguments.  It invokes the macro unsigned_mult_overflows(), which
divides the second parameter by the first one.  Pass constants
first to allow that division to be done already at compile time.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe 2016-07-30 20:18:31 +02:00 committed by Junio C Hamano
parent f8f7adce9f
commit 50492f7b38
3 changed files with 3 additions and 3 deletions

View File

@ -541,7 +541,7 @@ void diffcore_rename(struct diff_options *options)
rename_dst_nr * rename_src_nr, 50, 1);
}
mx = xcalloc(st_mult(num_create, NUM_CANDIDATE_PER_DST), sizeof(*mx));
mx = xcalloc(st_mult(NUM_CANDIDATE_PER_DST, num_create), sizeof(*mx));
for (dst_cnt = i = 0; i < rename_dst_nr; i++) {
struct diff_filespec *two = rename_dst[i].two;
struct diff_score *m;

2
refs.c
View File

@ -922,7 +922,7 @@ char *shorten_unambiguous_ref(const char *refname, int strict)
/* -2 for strlen("%.*s") - strlen("%s"); +1 for NUL */
total_len += strlen(ref_rev_parse_rules[nr_rules]) - 2 + 1;
scanf_fmts = xmalloc(st_add(st_mult(nr_rules, sizeof(char *)), total_len));
scanf_fmts = xmalloc(st_add(st_mult(sizeof(char *), nr_rules), total_len));
offset = 0;
for (i = 0; i < nr_rules; i++) {

View File

@ -389,7 +389,7 @@ static void paint_down(struct paint_info *info, const unsigned char *sha1,
unsigned int i, nr;
struct commit_list *head = NULL;
int bitmap_nr = (info->nr_bits + 31) / 32;
size_t bitmap_size = st_mult(bitmap_nr, sizeof(uint32_t));
size_t bitmap_size = st_mult(sizeof(uint32_t), bitmap_nr);
uint32_t *tmp = xmalloc(bitmap_size); /* to be freed before return */
uint32_t *bitmap = paint_alloc(info);
struct commit *c = lookup_commit_reference_gently(sha1, 1);