Re: [PATCH] commit-graph: fix sparse 'NULL pointer' warning

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

On Sat, Mar 23 2019, Ramsay Jones wrote:

> Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
> ---
>
> Hi Ævar,
>
> If you need to re-roll your 'ab/commit-graph-fixes' branch, could you
> please squash this into the relevant patch (commit aeb244adbc
> ("commit-graph: don't early exit(1) on e.g. \"git status\"", 2019-02-21).

Thanks. Will squash & re-submit. It's still just in "pu". Is there a
compiler that warns about it? Didn't on clang/gcc, but then again it's
just-as-valid-C & just a style issue, so compilers don't care...

> This same commit (aeb244adbc) also removes the last call, outside of the
> commit-graph.c file, to the function load_commit_graph_one(). So, this
> function is now a file-local symbol and could be marked 'static'.
>
> Also, the function verify_commit_graph_lite(), introduced in commit
> d8acf37ff7 ("commit-graph: fix segfault on e.g. \"git status\"",
> 2019-02-21), currently has no external callers. This function is also
> a file-local symbol and could be marked 'static', unless you have plans
> for future external calls?

Fixing these too. Just missed them. Thanks.

>  commit-graph.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/commit-graph.c b/commit-graph.c
> index 4696ee0036..680c6f5714 100644
> --- a/commit-graph.c
> +++ b/commit-graph.c
> @@ -100,7 +100,7 @@ struct commit_graph *load_commit_graph_one_fd_st(int fd, struct stat *st)
>  	if (graph_size < GRAPH_MIN_SIZE) {
>  		close(fd);
>  		error(_("commit-graph file is too small"));
> -		return 0;
> +		return NULL;
>  	}
>  	graph_map = xmmap(NULL, graph_size, PROT_READ, MAP_PRIVATE, fd, 0);
>  	ret = parse_commit_graph(graph_map, fd, graph_size);