The 'name' field passed to add_pending_object() is used to later
deduplicate in object_array_remove_duplicates().
git-bundle had a bug in this area since 18449ab (git-bundle: avoid
packing objects which are in the prerequisites, 2007-03-08): it passed
the name of each boundary object in a static buffer. In other words,
all that object_array_remove_duplicates() saw was the name of the
*last* added boundary object.
The recent switch to a strbuf in bc2fed4 (bundle: use a strbuf to scan
the log for boundary commits, 2012-02-22) made this slightly worse: we
now free the buffer at the end, so it is not even guaranteed that it
still points into addressable memory by the time object_array_remove_
duplicates looks at it. On the plus side however, it was now
detectable by valgrind.
The fix is easy: pass a copy of the string to add_pending_object.
Signed-off-by: Thomas Rast <trast@xxxxxxxxxxxxxxx>
---
bundle.c | 2 +-
t/t5510-fetch.sh | 16 ++++++++++++++++
2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/bundle.c b/bundle.c
index 7a760db..d9cfd90 100644
--- a/bundle.c
+++ b/bundle.c
@@ -273,7 +273,7 @@ int create_bundle(struct bundle_header *header, const char *path,
if (!get_sha1_hex(buf.buf + 1, sha1)) {
struct object *object = parse_object(sha1);
object->flags |= UNINTERESTING;
- add_pending_object(&revs, object, buf.buf);
+ add_pending_object(&revs, object, xstrdup(buf.buf));
}
} else if (!get_sha1_hex(buf.buf, sha1)) {
struct object *object = parse_object(sha1);
diff --git a/t/t5510-fetch.sh b/t/t5510-fetch.sh
index dd035bf..8b914f9 100755
--- a/t/t5510-fetch.sh
+++ b/t/t5510-fetch.sh
@@ -440,4 +440,20 @@ test_expect_success "should be able to fetch with duplicate refspecs" '
git fetch three
'
+
+test_expect_success 'all boundary commits are excluded' '
+ test_commit base &&
+ test_commit oneside &&
+ git checkout HEAD^ &&
+ test_commit otherside &&
+ git checkout master &&
+ test_tick &&
+ git merge otherside &&
+ ad=$(git log --no-walk --format=%ad HEAD) &&
+ git bundle create twoside-boundary.bdl master --since="$ad" &&
+ convert_bundle_to_pack <twoside-boundary.bdl >twoside-boundary.pack &&
+ pack=$(git index-pack --fix-thin --stdin <twoside-boundary.pack) &&
+ test_bundle_object_count .git/objects/pack/pack-${pack##pack }.pack 3
+'
+
test_done
--
1.7.9.2.467.g7fee4
--
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