Re: [HACKERS] Getting server crash on Windows when using ICU collation

Hi,

On Sat, Jun 17, 2017 at 6:57 AM, Peter Eisentraut
<peter.eisentraut@2ndquadrant.com> wrote:
> On 6/16/17 10:12, Peter Eisentraut wrote:
>> On 6/16/17 06:30, Amit Kapila wrote:
>>> How will this compare UTF-8 strings in UTF-8 encoding?  It seems to me
>>> that ideally, it should use ucol_strcollUTF8 to compare the same,
>>> however, with patch, it will always ucol_strcoll as we never define
>>> HAVE_UCOL_STRCOLLUTF8 flag on Windows.
>>
>> We have a configure check for that, but I don't know how to replicate
>> that on Windows.
>>
>> If ucol_strcollUTF8 is not available, we have code to convert to UTF-16.
>>  This is the same code that is used for non-Windows.
>
> After thinking about this some more, I have committed a change to define
> HAVE_UCOL_STRCOLLUTF8 on Windows unconditionally.

Surprisingly, I am not able to find this commit on a master branch.

Until someone figures
> out a different way, I think it's better that users of newish versions
> of ICU get the newer/better behavior, and users of older versions can
> file a bug.  The alternative is that we forget about this and we keep
> using the old code path indefinitely.

Well, it will work for the users who are using ICU version >= 50 but
not for the older ICU versions So, we will have to figure out a way,
to either detect the availability of ucoll_strcollutf8() on Windows or
may be ICU version itself and set HAVE_UCOL_STRCOLLUTF8 flag
accordingly.

-- 
With Regards,
Ashutosh Sharma
EnterpriseDB:http://www.enterprisedb.com

>
> --
> Peter Eisentraut              http://www.2ndQuadrant.com/
> PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services