Re: [PATCH 06/23] builtin/name-rev: fix various trivial memory leaks

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Patrick Steinhardt <ps@xxxxxx> writes:

> There are several structures that we don't release after
> `cmd_name_rev()` is done. Plug those leaks.
>
> Signed-off-by: Patrick Steinhardt <ps@xxxxxx>
> ---
>  builtin/name-rev.c                   | 6 ++++--
>  t/t6007-rev-list-cherry-pick-file.sh | 1 +
>  t/t6120-describe.sh                  | 1 +
>  3 files changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/builtin/name-rev.c b/builtin/name-rev.c
> index 70e9ec4e47..f62c0a36cb 100644
> --- a/builtin/name-rev.c
> +++ b/builtin/name-rev.c
> @@ -677,7 +677,9 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
>  				  always, allow_undefined, data.name_only);
>  	}
>  
> -	UNLEAK(string_pool);
> -	UNLEAK(revs);
> +	string_list_clear(&data.ref_filters, 0);
> +	string_list_clear(&data.exclude_filters, 0);
> +	mem_pool_discard(&string_pool, 0);
> +	object_array_clear(&revs);
>  	return 0;
>  }

You, originally these "we know we are at the very end of the
process, so _exit() will take care of releasing the resources" was a
very much deliberate, and in a sense, cmd_describe() calling to this
function as the last thing to do was still in the same spirit, but
it was not a hygiene thing to do.

In the longer term, we would want to make a major part of the body
of this "main" function into a reusable library-ish function, which
will be called the desribe and name-rev command implementations, and
when that happens, these fixes would move together to that
library-ish function.

Looking good.




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