[gdal-dev] GDAL 3.11 broke part of the Julia wrapper

[Joaquim Manuel Freire Luís]

BTW, the "dataset" in previous message is created as

ds = Gdal.create("", driver=getdriver("MEM"), width=width, height=height, nbands=size(GI,3), dtype=eltype(GI[1]))
https://github.com/GenericMappingTools/GMT.jl/blob/master/src/gdal_utils.jl#L530

where "G" is a 2D grid and size(GI,3) = 1

and the Gdal.create is defined in

https://github.com/GenericMappingTools/GMT.jl/blob/master/src/gdal.jl#L1194

From: gdal-dev <gdal-dev-bounces at lists.osgeo.org> On Behalf Of Joaquim Manuel Freire Luís via gdal-dev
Sent: Monday, May 12, 2025 12:05 AM
To: gdal-dev <gdal-dev at lists.osgeo.org>
Subject: [gdal-dev] GDAL 3.11 broke part of the Julia wrapper

Hi,

I'm afraid this one is not going to be easy, and I don't know how much help I can provide to find the issue. The think is that https://github.com/OSGeo/gdal/pull/12124 (which is a very big PR) broke my Julia wrapper.

For example, this used to write a png image but now it errors with

julia> gdalwrite("lixo.png", mat2img(UInt8.([1 2 3; 4 5 6; 7 8 9])))
ERROR 1: Cannot guess driver for lixo.png

But maybe more concrete is this failure where it tries to extract info from a gdal dataset (a pointer )


Gdal.GDALGetRasterYSize(dataset.ptr)
49
Gdal.GDALGetRasterCount(dataset.ptr)
1
Gdal.GDALDatasetGetLayerCount(dataset.ptr)
0

Here, first two are correct be the third is now wrong.

As I said above, I don't know how to provide more help on this and given the amount of cpp files changed I have no idea what to try.

Joaquim
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