Hi Yury,

Is there any chance I can have a copy of the file and that part of your code, 
from opening the file, perhaps?  I want to repeat the exact steps.  If not, 
please send me the errors.

Binh-Minh
________________________________
From: Hdf-forum <[email protected]> on behalf of Yury 
Girshovich <[email protected]>
Sent: Wednesday, July 24, 2013 2:35 PM
To: HDF Users Discussion List
Subject: Re: [Hdf-forum] Reading enum bool attribute

Scott,
I agree about the enum size. It was the returned value of the call to 
attr.getInMemDataSize(). Sorry for the misinformation.

The call to:

int i;
attr.read(PredType::NATIVE_INT, &i)

causes a crash. That is not surprising because of the size discrepancy. But I 
also tried to use all kinds of 8bit creatures,
like char, uchar, bool, replacing NATIVE_INT by NATIVE_CHAR, etc., but they all 
ended up with a crash.

Thanks,
Yury



On Wed, Jul 24, 2013 at 1:57 PM, Mitchell, Scott - IS 
<[email protected]<mailto:[email protected]>> wrote:
I don't think enums are stored as 1byte. You can check with H5T.getsize.

What happens if you try your read with attr_type as a NATIVE_INT and i as an 
int? Then cast it to bb.


Scott

From: Hdf-forum 
[mailto:[email protected]<mailto:[email protected]>]
 On Behalf Of Yury Girshovich

Sent: Wednesday, July 24, 2013 1:04 PM
To: [email protected]<mailto:[email protected]>
Subject: [Hdf-forum] Reading enum bool attribute

I am trying to read an attribute defined as

typedef enum {bbo=false, bb1=true} bb;

as

bb i;
attr.read(attr_type, &i);
The size of the attribute value is 1 byte.

For attr_type I tried all kinds of 8 bit predicate types (as one advice 
suggested use int, and then interpret your data),
bur no matter what I do the code crashes.
The value is inserted in a different code using Python, so I can get no help 
from there.
How should I define the predicate type then?
Thanks


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