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qdist: use g_renew and g_new instead of g_realloc and g_malloc. 

This is safer against overflow.  g_renew is available in all
version of glib, while g_realloc_n is only available in 2.24.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1469459025-23606-3-git-send-email-cota@braap.org>
[Rewritten to use g_new/g_renew. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Emilio G. Cota 2016-07-25 11:03:44 -04:00 committed by Paolo Bonzini
parent f9dbc19e8b
commit 071d405477
1 changed files with 3 additions and 4 deletions
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7
util/qdist.c
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@ -16,7 +16,7 @@
void qdist_init(struct qdist *dist)
{
dist->entries = g_malloc(sizeof(*dist->entries));
dist->entries = g_new(struct qdist_entry, 1);
dist->size = 1;
dist->n = 0;
}
@ -62,8 +62,7 @@ void qdist_add(struct qdist *dist, double x, long count)
if (unlikely(dist->n == dist->size)) {
dist->size *= 2;
dist->entries = g_realloc(dist->entries,
sizeof(*dist->entries) * (dist->size));
dist->entries = g_renew(struct qdist_entry, dist->entries, dist->size);
}
dist->n++;
entry = &dist->entries[dist->n - 1];
@ -188,7 +187,7 @@ void qdist_bin__internal(struct qdist *to, const struct qdist *from, size_t n)
}
}
/* they're equally spaced, so copy the dist and bail out */
to->entries = g_realloc_n(to->entries, n, sizeof(*to->entries));
to->entries = g_renew(struct qdist_entry, to->entries, n);
to->n = from->n;
memcpy(to->entries, from->entries, sizeof(*to->entries) * to->n);
return;