Re: [PATCH v2] linux-user: preserve incoming order of environment variables in the target

[Andreas Schwab]

On Mär 29 2023, Philippe Mathieu-Daudé wrote:

> On 29/3/23 16:00, Daniel P. Berrangé wrote:
>> On Wed, Mar 29, 2023 at 03:55:13PM +0200, Andreas Schwab wrote:
>>> Do not reverse the order of environment variables in the target environ
>>> array relative to the incoming environ order.  Some testsuites depend on a
>>> specific order, even though it is not defined by any standard.
>>>
>>> Signed-off-by: Andreas Schwab <schwab@suse.de>
>>> ---
>>>   linux-user/main.c | 6 ++++++
>>>   1 file changed, 6 insertions(+)
>> bsd-user/main.c appears to have an identical code pattern that
>> will need the same fix
>> 
>>>
>>> diff --git a/linux-user/main.c b/linux-user/main.c
>>> index 4b18461969..dbfd3ee8f1 100644
>>> --- a/linux-user/main.c
>>> +++ b/linux-user/main.c
>>> @@ -691,7 +691,13 @@ int main(int argc, char **argv, char **envp)
>>>       envlist = envlist_create();
>>>         /* add current environment into the list */
>>> +    /* envlist_setenv adds to the front of the list; to preserve environ
>>> +       order add from back to front */
>
> Also, QEMU coding style now requires:
>
>   /*
>    * this comment form.
>    */

It's unfortunate that the next comment just below doesn't follow the
correct style, so I didn't notice.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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"And now for something completely different."