Hi Even,
 
thanks for the fix.
With ogr2ogr re-projection now works as expected, but when using gdal vector 
pipeline (reproject -d EPSG:4326) it  works without any changes . Is this 
correct?
 
>Sunday, October 19, 2025 1:11 AM +03:00 from Even Rouault < 
>[email protected] >:
> 
>Hi,
>this issue will be fixed per  https://github.com/OSGeo/gdal/pull/13243
>Even
>Le 14/10/2025 à 14:50, Andrey VI via gdal-dev a écrit :
>>Hello.
>> 
>>I can't reproject data from a  Polar Stereographic projection (EPSG:3996) to 
>>a geographic projection (EPSG:4326) correctly using ogr2ogr. Command:
>>ogr2ogr -t_srs EPSG:4326 -wrapdateline polys_4326.shp polys.shp
>>ERROR 1: IllegalArgumentException: Points of LinearRing do not form a closed 
>>linestring
>>ERROR 1: IllegalArgumentException: Points of LinearRing do not form a closed 
>>linestring
>>ERROR 1: IllegalArgumentException: Points of LinearRing do not form a closed 
>>linestring
>>ERROR 1: IllegalArgumentException: Points of LinearRing do not form a closed 
>>linestring
>>ERROR 1: IllegalArgumentException: Points of LinearRing do not form a closed 
>>linestring
>>ERROR 1: IllegalArgumentException: Points of LinearRing do not form a closed 
>>linestring
>>  As a result some polygons are broken and also some polygons appears with 
>>artifacts.
>>The data used and the result (58 MB):  
>>https://drive.google.com/file/d/176jtROjjeTlAQTITAJ75tBT1GwiUzSUm/view?usp=sharing
>> .
>> 
>>How to reproject from a  projection naturally crossing the anti-meridian to a 
>>geographic CRS without any errors using ogr2ogr?
>>--
>>Andrey  
>>_______________________________________________
>>gdal-dev mailing list
>>[email protected]
>>https://lists.osgeo.org/mailman/listinfo/gdal-dev
>>
>-- 
>http://www.spatialys.com
>My software is free, but my time generally not.
--
Andrey
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