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Re: [Qemu-devel] [PATCH 2/9] qtest: Document calling conventions


From: Markus Armbruster
Subject: Re: [Qemu-devel] [PATCH 2/9] qtest: Document calling conventions
Date: Fri, 21 Jul 2017 17:48:12 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux)

Eric Blake <address@hidden> writes:

> On 07/21/2017 08:53 AM, Markus Armbruster wrote:
>> From: Eric Blake <address@hidden>
>> 
>> We have two flavors of vararg usage in qtest; make it clear that
>> qmp() has different semantics than hmp(), and let the compiler
>> enforce that hmp() is used correctly. However, qmp() (and friends)
>> only accept a subset of printf flags look-alikes (namely, those
>> that our JSON parser understands), and what is worse, qmp("true")
>> (the JSON keyword 'true') is different from qmp("%s", "true")
>> (the JSON string '"true"'), so marking those as printf-like would
>> produce more harm from bogus warnings than it helps (we may have
>> made a mistake in previously marking qobject_from_jsonf(), but
>> this patch is not addressing that).
>> 
>> Signed-off-by: Eric Blake <address@hidden>
>> Message-Id: <address@hidden>
>> Signed-off-by: Markus Armbruster <address@hidden>
>
> As you pointed out on the other thread,
>
>> @@ -134,7 +137,7 @@ QDict *qtest_qmp_eventwait_ref(QTestState *s, const char 
>> *event);
>>  /**
>>   * qtest_hmp:
>>   * @s: #QTestState instance to operate on.
>> - * @fmt...: HMP command to send to QEMU
>> + * @fmt...: HMP command to send to QEMU, formats arguments like vsprintf().
>>   *
>>   * Send HMP command to QEMU via QMP's human-monitor-command.
>>   * QMP events are discarded.
>
> I accidentally killed the attribute here,
>
>> @@ -592,7 +598,7 @@ static inline QDict *qmp_eventwait_ref(const char *event)
>>  
>>  /**
>>   * hmp:
>> - * @fmt...: HMP command to send to QEMU
>> + * @fmt...: HMP command to send to QEMU, formats arguments like vsprintf().
>>   *
>>   * Send HMP command to QEMU via QMP's human-monitor-command.
>>   *
>
> and here.

Putting them back is easier than updating commit message 1/9.



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