Re: [PATCH 1/2] sequencer: trivial fix

[Felipe Contreras <felipe.contreras@gmail.com>]

Junio C Hamano wrote:
> Neil Horman <nhorman@tuxdriver.com> writes:
> 
> > On Mon, May 27, 2013 at 11:52:18AM -0500, Felipe Contreras wrote:
> >> We should free objects before leaving.
> >> 
> >> Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
> >> ---
> >>  sequencer.c | 7 +++++--
> >>  1 file changed, 5 insertions(+), 2 deletions(-)
> >> 
> >> diff --git a/sequencer.c b/sequencer.c
> >> index ab6f8a7..7eeae2f 100644
> >> --- a/sequencer.c
> >> +++ b/sequencer.c
> >> @@ -626,12 +626,15 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
> >>  		rerere(opts->allow_rerere_auto);
> >>  	} else {
> >>  		int allow = allow_empty(opts, commit);
> >> -		if (allow < 0)
> >> -			return allow;
> >> +		if (allow < 0) {
> >> +			res = allow;
> >> +			goto leave;
> >> +		}
> >>  		if (!opts->no_commit)
> >>  			res = run_git_commit(defmsg, opts, allow);
> >>  	}
> >>  
> >> +leave:
> >>  	free_message(&msg);
> >>  	free(defmsg);
> >>  
> >> -- 
> >> 1.8.3.rc3.312.g47657de
> >> 
> >> 
> > Acked-by: Neil Horman <nhorman@tuxdriver.com>
> 
> This is better done without "goto" in general.
> 
> The other patch 2/2/ adds one more "we need to exit from the middle
> of the flow" and makes it look handier to add an exit label here,
> but it would be even better to express the logic of that patch as a
> normal cascade of if/else if/..., which is small enough and we do
> not need the "leave:" label.

Linux kernel developers would disagree. In C 'goto' is quite of then the only
sane option, and you can see 'goto' used in the Linux kernel all over the place
for that reason.

In this particular case it also makes perfect sense.

> It probably is better to fold this patch into the other one when it
> is rerolled to correct the option name gotcha "on the tin".

Why? This patch is standalone and fixes an issue that is independent of the
other patch. Why squash two patches that do *two* different things?

Anyway, I'll happily drop this patch if you want this memory leak to remain.
But then I'll do the same in the other patch.

This mantra of avodiing 'goto' is not helping anybody.

-- 
Felipe Contreras