From: Derrick Stolee <dstolee@xxxxxxxxxxxxx> Before iterating over all cache entries, ensure that a sparse index has been expanded to a full one to avoid unexpected behavior. Signed-off-by: Derrick Stolee <dstolee@xxxxxxxxxxxxx> --- builtin/difftool.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/builtin/difftool.c b/builtin/difftool.c index 6e18e623fddf..1d62f77efa61 100644 --- a/builtin/difftool.c +++ b/builtin/difftool.c @@ -584,6 +584,8 @@ static int run_dir_diff(const char *extcmd, int symlinks, const char *prefix, setenv("GIT_DIFFTOOL_DIRDIFF", "true", 1); rc = run_command_v_opt(helper_argv, flags); + ensure_full_index(&wtindex); + /* * If the diff includes working copy files and those * files were modified during the diff, then the changes -- gitgitgadget