MDAL crashes with MARS data (GRIB)

[PeterPetrik]

https://apps.ecmwf.int/datasets/data/interim-full-daily/levtype=sfc/

crashes on

void MDAL::DriverGdal::addDataToOutput( GDALRasterBandH raster_band, std::shared_ptr<MemoryDataset> tos, bool is_vector, bool is_x )
{
  assert( raster_band );

where raster_band is null pointer;

[PeterPetrik]

@nirvn

[nirvn]

Thanks for looking into this @PeterPetrik .

[saberraz]

_mars-atls14-95e2cf679cd58ee9b4db4dd119a05a8d-JqgDKs.grib.zip
Works fine with the attached data.

[nirvn]

This one crashes QGIS: https://www.dropbox.com/s/o9b8cuq22mybvj7/_mars-atls06-70e05f9f8ba4e9d19932f1c45a7be8d8-BlonFv.grib?dl=0

[saberraz]

auuuch....it didn't even give any error message...💥💥💥

[nirvn]

Yeah it's brutal ;)

[PeterPetrik]

@nirvn do you have the same (failing) testcase but smaller (smaller area or less timesteps). ideally < 1MB so I can add it to test suite.

I think I found the error . In dataset, there is variable wind which has metadata which suggests it is vector quantity. But it has just 1 part of the data...

[nirvn]

Nothing at-hand unfortunately. I'll try to fetch a smaller version that still crashes tomorrow.

[saberraz]

wind_u.grib.zip
I have extracted the first 2 time steps from the problematic grib and saved it in this file...which still crashes QGIS.

cdo seltimestep,1/2 _mars-atls06-70e05f9f8ba4e9d19932f1c45a7be8d8-BlonFv.grib wind_u.grib

[PedroVenancio]

Hi @PeterPetrik ,

I've some NetCDF files that crash QGIS (both 3.4.4 and Master) when loading them as Mesh or thru Browser. This seems to just happen in Windows (OSGeo4w64bits).

Can you please take a look?

Any of NetCDF from this site have this behaviour:

http://mf2.ipma.pt/downloads/

Thank you very much!

Best regards,
Pedro

[saberraz]

Hi @PedroVenancio
I tested it in Windows and it is related to #72

You need to change QGIS Shortcut in Windows. Right-click on QGIS shortcut in your start menu and select Properties.

In the new windows, set the Start in folder to somewhere, where user has write access (e.g. Desktop).
After that, I managed to open it:

[PedroVenancio]

Hi @saberraz

I've done that change in the shortcut, but I get the same crash, both in QGIS 3.4.4 and Master:

QGIS version 3.4.4-Madeira
QGIS code revision 0e635828d9
Compiled against Qt 5.11.2
Running against Qt 5.11.2
Compiled against GDAL/OGR 2.4.0
Running against GDAL/OGR 2.4.0
Compiled against GEOS 3.7.0-CAPI-1.11.0
Running against GEOS 3.7.0-CAPI-1.11.0 673b9939
PostgreSQL Client Version 9.2.4
SpatiaLite Version 4.3.0
QWT Version 6.1.3
QScintilla2 Version 2.10.8
Compiled against PROJ 520
Running against PROJ 5.2.0

QGIS version 3.5.0-Master
QGIS code revision 57695bd036
Compiled against Qt 5.11.2
Running against Qt 5.11.2
Compiled against GDAL/OGR 2.4.0
Running against GDAL/OGR 2.4.0
Compiled against GEOS 3.7.0-CAPI-1.11.0
Running against GEOS 3.7.0-CAPI-1.11.0 673b9939
PostgreSQL Client Version 9.2.4
SpatiaLite Version 4.3.0
QWT Version 6.1.3
QScintilla2 Version 2.10.8
Compiled against PROJ 520
Running against PROJ 5.2.0

I updated them today with OSGeo4W.

I also have started QGIS as Admin, and directly in the Admin user account, and I get always the crash.

Do you have any other hint?

Thanks!

[saberraz]

please follow #90