[Bug network/15726] getaddrinfo() returns incorrect status

[carlos at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15726

Carlos O'Donell <carlos at redhat dot com> changed:

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                 CC|                            |carlos at redhat dot com

--- Comment #13 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Rich Felker from comment #12)
> Conceptually, this whole topic is very simple. getaddrinfo has two
> "successful" result possibilities, 0 and EAI_NONAME.
> 
> 0 means a successful query was performed and returned a result.
> 
> EAI_NONAME means a successful query was performed and determined that the
> queried name does not (by hostname lookup) or cannot (by virtue of being an
> invalid ip string) exist.
> 
> All other result codes indicate to the application that something went wrong
> during the name resolving process, and that the result is indeterminate.

What about EAI_NODATA which glibc still uses? It would seem that EAI_NODATA is
more likely be returned in the current implementation than EAI_NONAME (which is
mostly returned for the parameter errors discussed).

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