Re: [PATCH 5/5] util/qsp: Do not declare local variable only used for assertion

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 9/2/20 11:11 AM, Greg Kurz wrote:
> On Wed,  2 Sep 2020 10:08:01 +0200
> Philippe Mathieu-Daudé <philmd@redhat.com> wrote:
> 
>> This variable is used once in an assertion. Remove single
>> declaration and access directly in the assert().
>>
>> See in "qemu/osdep.h":
>>
>>  *                                  [...] disable assertion is not
>>  * supported upstream so the risk is all yours.  Meanwhile, please
>>  * submit patches to remove any side-effects inside an assertion, or
>>  * fixing error handling that should use Error instead of assert.
>>
>> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
>> ---
>>  util/qsp.c | 4 +---
>>  1 file changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/util/qsp.c b/util/qsp.c
>> index 7d5147f1b20..1db044ecedd 100644
>> --- a/util/qsp.c
>> +++ b/util/qsp.c
>> @@ -560,9 +560,7 @@ static void qsp_iter_diff(void *p, uint32_t hash, void *htp)
>>  
>>      /* No point in reporting an empty entry */
>>      if (new->n_acqs == 0 && new->ns == 0) {
>> -        bool removed = qht_remove(ht, new, hash);
>> -
>> -        g_assert(removed);
>> +        g_assert(qht_remove(ht, new, hash));
> 
> Urgh... this is doing exactly the opposite of the "qemu/osdep.h"
> recommandations above. We still want to remove new from the
> hash table even if QEMU was built without assertions.

Oops you are right :/

> 
>>          g_free(new);
>>      }
>>  }
>