When rebasing interacitvely (rebase -i), "git branch -l" prints a line indicating the current branch being rebased. This works well when the interactive rebase was intiated when a local branch is checked out.
This doesn't play well when the rebase was initiated on a remote branch or an arbitrary commit that is not pointed to by a local branch. In this case "git branch -l" tries to print the name of a branch using an unintialized variable and thus tries to print a "null pointer string". As a consequence, it does not provide useful information while also inducing undefined behaviour. So, print the commit from which the rebase started when interactive rebasing a non-local branch. Signed-off-by: Kaartic Sivaraam <kaartic.sivar...@gmail.com> --- ref-filter.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/ref-filter.c b/ref-filter.c index f9e25aea7..a4c917c96 100644 --- a/ref-filter.c +++ b/ref-filter.c @@ -1310,8 +1310,16 @@ char *get_head_description(void) wt_status_get_state(&state, 1); if (state.rebase_in_progress || state.rebase_interactive_in_progress) + { + const char *rebasing = NULL; + if (state.branch != NULL) + rebasing = state.branch; + else + rebasing = state.detached_from; + strbuf_addf(&desc, _("(no branch, rebasing %s)"), - state.branch); + rebasing); + } else if (state.bisect_in_progress) strbuf_addf(&desc, _("(no branch, bisect started on %s)"), state.branch); -- 2.17.0.rc0.231.g781580f06