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-rw-r--r--revision.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/revision.c b/revision.c
index 82f3ca44b3..8b2dfe3160 100644
--- a/revision.c
+++ b/revision.c
@@ -484,7 +484,7 @@ struct treesame_state {
static struct treesame_state *initialise_treesame(struct rev_info *revs, struct commit *commit)
{
unsigned n = commit_list_count(commit->parents);
- struct treesame_state *st = xcalloc(1, sizeof(*st) + n);
+ struct treesame_state *st = xcalloc(1, st_add(sizeof(*st), n));
st->nparents = n;
add_decoration(&revs->treesame, &commit->object, st);
return st;