The require_clean_work_tree() function calls hold_locked_index() with die_on_error=0 to signal that it is OK if it fails to obtain the lock, but unconditionally calls update_index_if_able(), which will try to write into fd=-1. Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx> --- wt-status.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/wt-status.c b/wt-status.c index a2e9d332d8..a715e71906 100644 --- a/wt-status.c +++ b/wt-status.c @@ -2258,11 +2258,12 @@ int has_uncommitted_changes(int ignore_submodules) int require_clean_work_tree(const char *action, const char *hint, int ignore_submodules, int gently) { struct lock_file *lock_file = xcalloc(1, sizeof(*lock_file)); - int err = 0; + int err = 0, fd; - hold_locked_index(lock_file, 0); + fd = hold_locked_index(lock_file, 0); refresh_cache(REFRESH_QUIET); - update_index_if_able(&the_index, lock_file); + if (0 <= fd) + update_index_if_able(&the_index, lock_file); rollback_lock_file(lock_file); if (has_unstaged_changes(ignore_submodules)) { -- 2.11.0-274-g0631465056