Re: [Qemu-devel] [PATCH v5 3/4] net/net: Convert parse_host_port() to Error

[Markus Armbruster]

Paolo Bonzini <address@hidden> writes:

> On 28/06/2017 07:51, Markus Armbruster wrote:
>>> The gethostbyname() return a null pointer if an error occurs, and the 
>>> h_errno
>>> variable holds an error number. herror() and hstrerror() can prints the 
>>> error
>>> message associated with the current value of h_errno, but hstrerror() 
>>> returns
>>> the string type is good for passing the error message to Error. So I'd 
>>> prefer
>>> the hstrerror.
>>>
>>> As for the portability of hstrerror(), sorry, I'm also not sure, but in this
>>> case I tested, it's OK. so I want to use hstrerror() for a while, if there 
>>> are
>>> any problem that can be fixed later. Do you think it can be done?
>>
>> Standard first portability question: does Windows provide it?
>
> Nope.  But it does have gai_strerror.

Let's go with the generic error message I suggested, and leave adding
detail to the patch that converts to getaddrinfo().