Re: File Owner and Group ID on Windows

[Lennart Borgman (gmail)]

Juanma Barranquero wrote:
> On Mon, Aug 25, 2008 at 05:07, Eli Zaretskii <address@hidden> wrote:
> 
>> The only change between 22.x and the current CVS trunk should be that
>> the value of dflt_passwd.pw_uid is computed differently from the
>> user's SID we extract from Emacs's process token.  But what you found
>> from your debugging seems to indicate that somehow one of the syscalls
>> we use for extracting the SID stopped working, and I don't expect any
>> differences there, because that code wasn't supposed to change between
>> 22.x and the trunk.
> 
> I don't think it has anything to do with syscalls. It's likely a
> memory corruption or somesuch. The problem appears on 23.X with
> optimized builds.
> 
> Specifically:
> 
>  - EMACS_22_BASE (-O2)             -- get_token_information => 1
>  - trunk (-O2)                     -- get_token_information => 0
>  - trunk (w32.c compiled with -O1) -- get_token_information => 1
> 
> I'm trying to pinpoint when was the problem introduced.


Checking the return values from syscalls might help.