Re: mingw check hung

Magnus Hagander wrote:
>> Specifically, it's the SetEnvironmentVariable() call from
>> pgwin32_putenv() called from pgwin32_unsetenv(). When this is disabled
>> things work just fine.
>>     
>
> That's strange :( What arguments are it sent to the function? Since this
> is an API function, it really shouldn't behave differently between mingw
> and msvc, so it must be something that goes wrong with the arguments.
>
> Also, Tom mentioned earlier that we may be including *two* replacements
> for unsetenv(), which could be what's causing the problem. Can you check
> if that is happening and try to disable the one in port/unsetenv.c and
> see if that changes things?
>
>
>   

I've already ruled out that hypothesis by forcing the call direct to 
pgwin32_unsetenv() instead of relying on the macro, in initdb.c.

There are only two such calls in initdb.c: the arguments are "LC_ALL" 
and "PGCLIENTENCODING".

I wonder if this version of SetEnvironmentVariable is sufficiently dumb 
that it fails badly if given a NULL second argument for a value that is 
not in fact in the environment (as I would normally expect of these on 
Windows)?

cheers

andrew