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Under some circumstances, I'm seeing an assertion errors when I create  
a new dataset inside a sample HDF5 file I'd created using HDFView

Platform:         Windows XP 64bit

HDF5 version:    1.8.5-patch1  (and 1.8.5), recompiled to disable SZIP

HDFView version: 2.6.1 for Windows XP


Attached is a sample application and a H5 file that result in me  
getting the following assertion errors when I try to create the dataset:

Assertion failed: elem, file ..\..\..\src\H5FL.c, line 1876
Assertion failed: H5F_sfile_head_g == ((void *)0), file  
..\..\..\src\H5Fsfile.c, line 65


More detail on the oddness...

In the sample H5 file, I've created some groups / datasets that I'm  
using in unit tests for a wrapper around HDF5lib that I'm writing.

In the sample application, I open the file,create a group '/newGroup',  
and try to create a dataset '/newGroup/newDataset' which results in  
the above assertion failures


However, if I create the dataset beneath a pre-existing group in the  
H5 file, either '/group1/newDataset' or just in the root  
'/newDataset', I _do not_ get the assertion failures.

Also, if I create an empty H5 file via my application and then add the  
'/newGroup' and '/newGroup/newDataset', I _do not_ get the assertion  
failures.

So... is this some weird mismatch between the properties with which  
HDFView created the groups in the test file vs. how I've got the  
properties when I create '/newGroup'? What do I do to fix it?


Thanks,
Steve Christensen

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