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bundle: keep around names passed to add_pending_object()

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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@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Thomas Rast 2012-03-01 22:40:51 +01:00 committed by Junio C Hamano
parent aa9828561e
commit efe4be1249
2 changed files with 16 additions and 1 deletions
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2
bundle.c
View file

@ -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);

15
t/t5510-fetch.sh
View file

@ -442,4 +442,19 @@ test_expect_success "should be able to fetch with duplicate refspecs" '
)
'
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