[PATCH 4/5] merge: always roll back lock in `checkout_fast_forward()`
From: Martin Ågren <hidden>
Date: 2018-02-27 21:30:58
Subsystem:
the rest · Maintainer:
Linus Torvalds
This function originated in builtin/merge.c. It was moved to merge.c in commit db699a8a1f (Move try_merge_command and checkout_fast_forward to libgit.a, 2012-10-26), but was used from sequencer.c even before that. If a problem occurs, the function returns without rolling back the lockfile. Teach it to do so. Signed-off-by: Martin Ågren <redacted> --- merge.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/merge.c b/merge.c
index 195b578700..f06a4773d4 100644
--- a/merge.c
+++ b/merge.c@@ -113,17 +113,23 @@ int checkout_fast_forward(const struct object_id *head, setup_unpack_trees_porcelain(&opts, "merge"); trees[nr_trees] = parse_tree_indirect(head); - if (!trees[nr_trees++]) + if (!trees[nr_trees++]) { + rollback_lock_file(&lock_file); return -1; + } trees[nr_trees] = parse_tree_indirect(remote); - if (!trees[nr_trees++]) + if (!trees[nr_trees++]) { + rollback_lock_file(&lock_file); return -1; + } for (i = 0; i < nr_trees; i++) { parse_tree(trees[i]); init_tree_desc(t+i, trees[i]->buffer, trees[i]->size); } - if (unpack_trees(nr_trees, t, &opts)) + if (unpack_trees(nr_trees, t, &opts)) { + rollback_lock_file(&lock_file); return -1; + } if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK)) return error(_("unable to write new index file")); return 0;
--
2.16.2.246.ga4ee44448f