[lttng-dev] [PATCH lttng-tools 2/5] Fix: should pass the reg_enum_lookup pointer directly

[Mathieu Desnoyers]

----- On Feb 7, 2018, at 2:36 PM, Francis Deslauriers francis.deslauriers at efficios.com wrote:

> As the ht_hash_enum and ht_match_enum functions are not changing the
> pointer there is no need to pass the address of the pointer.

The changelog seems too nice. The current situation is that the arguments
passed to the cds_lfht_lookup() function do not match the args expected by ht_has_enum
and ht_match_enum, and by chance we probably always end up comparing with garbage ?

The changelog should better describe the current problem.

Thanks,

Mathieu

> 
> Signed-off-by: Francis Deslauriers <francis.deslauriers at efficios.com>
> ---
> src/bin/lttng-sessiond/ust-registry.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/src/bin/lttng-sessiond/ust-registry.c
> b/src/bin/lttng-sessiond/ust-registry.c
> index e336b9e..cd6fdac 100644
> --- a/src/bin/lttng-sessiond/ust-registry.c
> +++ b/src/bin/lttng-sessiond/ust-registry.c
> @@ -558,8 +558,8 @@ struct ust_registry_enum *
> 	struct lttng_ht_iter iter;
> 
> 	cds_lfht_lookup(session->enums->ht,
> -			ht_hash_enum((void *) &reg_enum_lookup, lttng_ht_seed),
> -			ht_match_enum, &reg_enum_lookup, &iter.iter);
> +			ht_hash_enum((void *) reg_enum_lookup, lttng_ht_seed),
> +			ht_match_enum, reg_enum_lookup, &iter.iter);
> 	node = lttng_ht_iter_get_node_str(&iter);
> 	if (!node) {
> 	        goto end;
> --
> 2.7.4
> 
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-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com