diff options
author | Junio C Hamano <gitster@pobox.com> | 2016-01-20 22:43:32 +0300 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2016-01-20 22:43:32 +0300 |
commit | ceef512e797115ae581cfbfd220334e20f1c7b28 (patch) | |
tree | bcb722598337cc1b9845172954de89432950dab8 | |
parent | 1576f783425b9cb7f7e54839c4a66adb2e95afea (diff) | |
parent | aecad374ae7492cc7b2add5fa416d43e1f68c18e (diff) |
Merge branch 'dk/reflog-walk-with-non-commit'
"git reflog" incorrectly assumed that all objects that used to be
at the tip of a ref must be commits, which caused it to segfault.
* dk/reflog-walk-with-non-commit:
reflog-walk: don't segfault on non-commit sha1's in the reflog
-rw-r--r-- | reflog-walk.c | 16 | ||||
-rwxr-xr-x | t/t1410-reflog.sh | 13 |
2 files changed, 24 insertions, 5 deletions
diff --git a/reflog-walk.c b/reflog-walk.c index 85b8a54241..0ebd1da5ce 100644 --- a/reflog-walk.c +++ b/reflog-walk.c @@ -221,6 +221,7 @@ void fake_reflog_parent(struct reflog_walk_info *info, struct commit *commit) struct commit_info *commit_info = get_commit_info(commit, &info->reflogs, 0); struct commit_reflog *commit_reflog; + struct object *logobj; struct reflog_info *reflog; info->last_commit_reflog = NULL; @@ -232,15 +233,20 @@ void fake_reflog_parent(struct reflog_walk_info *info, struct commit *commit) commit->parents = NULL; return; } - - reflog = &commit_reflog->reflogs->items[commit_reflog->recno]; info->last_commit_reflog = commit_reflog; - commit_reflog->recno--; - commit_info->commit = (struct commit *)parse_object(reflog->osha1); - if (!commit_info->commit) { + + do { + reflog = &commit_reflog->reflogs->items[commit_reflog->recno]; + commit_reflog->recno--; + logobj = parse_object(reflog->osha1); + } while (commit_reflog->recno && (logobj && logobj->type != OBJ_COMMIT)); + + if (!logobj || logobj->type != OBJ_COMMIT) { + commit_info->commit = NULL; commit->parents = NULL; return; } + commit_info->commit = (struct commit *)logobj; commit->parents = xcalloc(1, sizeof(struct commit_list)); commit->parents->item = commit_info->commit; diff --git a/t/t1410-reflog.sh b/t/t1410-reflog.sh index b79049f6f6..17a194bfa6 100755 --- a/t/t1410-reflog.sh +++ b/t/t1410-reflog.sh @@ -325,4 +325,17 @@ test_expect_success 'parsing reverse reflogs at BUFSIZ boundaries' ' test_cmp expect actual ' +test_expect_success 'no segfaults for reflog containing non-commit sha1s' ' + git update-ref --create-reflog -m "Creating ref" \ + refs/tests/tree-in-reflog HEAD && + git update-ref -m "Forcing tree" refs/tests/tree-in-reflog HEAD^{tree} && + git update-ref -m "Restoring to commit" refs/tests/tree-in-reflog HEAD && + git reflog refs/tests/tree-in-reflog +' + +test_expect_failure 'reflog with non-commit entries displays all entries' ' + git reflog refs/tests/tree-in-reflog >actual && + test_line_count = 3 actual +' + test_done |