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Re: [Qemu-devel] [PATCH 7/7] error: On abort, report where the error was
From: |
Markus Armbruster |
Subject: |
Re: [Qemu-devel] [PATCH 7/7] error: On abort, report where the error was created |
Date: |
Thu, 23 Jul 2015 13:22:19 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) |
Eric Blake <address@hidden> writes:
> On 07/22/2015 07:54 AM, Markus Armbruster wrote:
>
>>>
>>>> +#define error_setg(errp, fmt, ...) \
>>>> + error_setg_internal((errp), __FILE__, __LINE__, (fmt), ## __VA_ARGS__)
>>>> +void error_setg_internal(Error **errp, const char *src, int line,
>>>> + const char *fmt, ...) GCC_FMT_ATTR(4, 5);
>>>>
>>>
>>>> +#define error_setg_errno(errp, os_error, fmt, ...) \
>>>> + error_setg_errno_internal((errp), __FILE__, __LINE__, (os_error), \
>>>> + (fmt), ## __VA_ARGS__)
>>>
>>> Nit - why the difference in \ alignment?
>>
>> I'm dense today... difference between where and where?
>
> one space after error_setg(), aligned to far right after error_setg_errno().
Normalized.
>>> Nit - as used here, 'errp', 'fmt', and 'os_error' can be used
>>> unambiguously; you don't need '(errp)' given the context of a
>>> parenthesized comma-separated list (even if someone DID want to unusual
>>> by passing in '(a,b)' with a comma operator for their 'errp' argument,
>>> they'd have to supply the () because of the semantics of making the
>>> macro call).
>>
>> I put parenthesis around macro parameters in the expansion pretty much
>> unthinkingly, because thought is expensive :)
>
> Of course, it doesn't hurt semantically to leave them in, and if you
> value the lower maintenance burden of less thinking, then the extra
> typing is not something I will reject :)
Thanks!