incorrect dataset files name

[logmaster]

One of colleague gave me a ETM dataset. it contains four files with same file titles "ca2001_01_01_etmplus", and different extension: img, rrd, ige, and rde. I loaded it into Erdas Viewer and it looks very good. I opened it using GDAL 1.7.1 and learnt the dataset has 10 pyramid level.

when I loaded the data at full resolution or the level 9, an error returned at:

cperr = pband[0]->RasterIO(GF_Read, 0, 0, 64, 64, pdata, 64, 64, GDT_Byte, 0, 0);

I traced into the source code and found that, in function:

HFABand::LoadExternalBlockInfo()

the line:

const char *pszRawFilename = poDMS->GetStringField( "fileName.string" );

the value of pszRawFilename is different from the actual file title (fow rde and ige only).

so the problem may be caused by unconsciously renaming of the ige and rde files.

I would like to know, is there anyway to let user know the proper files are missing, when openning the data?

[Even Rouault]

Looks like a duplicate of #3897 whose latest fixes should be in 1.8.1 I believe.