One of the indirect callers of make_virtual_commit() passes the result of
oid_to_hex() as the name, i.e. a pointer to a static buffer. Since the
function uses that string pointer directly in building a struct
merge_remote_desc, multiple entries can end up sharing the same name
inadvertently.
Fix that by calling set_merge_remote_desc(), which creates a copy of the
string, instead of building the struct by hand.
Signed-off-by: Rene Scharfe <l.s.r@xxxxxx>
---
merge-recursive.c | 5 +----
t/t3030-merge-recursive.sh | 18 ++++++++++++++++++
2 files changed, 19 insertions(+), 4 deletions(-)
diff --git a/merge-recursive.c b/merge-recursive.c
index e5243c2..e349126 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -73,12 +73,9 @@ static struct tree *shift_tree_object(struct tree *one, struct tree *two,
static struct commit *make_virtual_commit(struct tree *tree, const char *comment)
{
struct commit *commit = alloc_commit_node();
- struct merge_remote_desc *desc = xmalloc(sizeof(*desc));
- desc->name = comment;
- desc->obj = (struct object *)commit;
+ set_merge_remote_desc(commit, comment, (struct object *)commit);
commit->tree = tree;
- commit->util = desc;
commit->object.parsed = 1;
return commit;
}
diff --git a/t/t3030-merge-recursive.sh b/t/t3030-merge-recursive.sh
index f7b0e59..470f334 100755
--- a/t/t3030-merge-recursive.sh
+++ b/t/t3030-merge-recursive.sh
@@ -660,4 +660,22 @@ test_expect_success 'merging with triple rename across D/F conflict' '
git merge other
'
+test_expect_success 'merge-recursive remembers the names of all base trees' '
+ git reset --hard HEAD &&
+
+ # more trees than static slots used by oid_to_hex()
+ for commit in $c0 $c2 $c4 $c5 $c6 $c7
+ do
+ git rev-parse "$commit^{tree}"
+ done >trees &&
+
+ # ignore the return code -- it only fails because the input is weird
+ test_must_fail git -c merge.verbosity=5 merge-recursive $(cat trees) -- $c1 $c3 >out &&
+
+ # merge-recursive prints in reverse order, but we do not care
+ sort <trees >expect &&
+ sed -n "s/^virtual //p" out | sort >actual &&
+ test_cmp expect actual
+'
+
test_done
--
2.9.3
--
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