[gdal-dev] Mute HDF5-DIAG diagnostic output

[Christian Beilschmidt]

 <https://gis.stackexchange.com/posts/490841/timeline>

Dear GDAL devs,

I am using GDAL 3.8.4 and have some tests in a Rust codebase that check
behavior on trying to open non-existing NetCDF files, non-existing groups
within the NetCDF, etc.

I am working with the dataset by opening it as a multidimensional GDAL
dataset and then use GDALGroupOpenGroup, etc.

The testing works fine, but I am getting loads of diagnostic messages from
the underlying NetCDF library.

HDF5-DIAG: Error detected in HDF5 (1.10.10) thread 3:
  #000: ../../../src/H5A.c line 484 in H5Aopen_by_name(): can't open attribute
    major: Attribute
    minor: Can't open object
  #001: ../../../src/H5Aint.c line 542 in H5A__open_by_name(): unable
to load attribute info from object header
    major: Attribute
    minor: Unable to initialize object
  #002: ../../../src/H5Oattribute.c line 496 in
H5O__attr_open_by_name(): can't locate attribute:
'_QuantizeGranularBitRoundNumberOfSignificantDigits'
    major: Attribute
    minor: Object not found


How can I mute these HDF5-DIAG messages?

I tried sending GDAL's error logging to /dev/null but this does not change
anything.


Best regards

 Christian
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