https://bugs.kde.org/show_bug.cgi?id=469643

--- Comment #8 from caulier.gil...@gmail.com ---
>From your DebugView session, these messages :

[29904] digikam.general: Trying to get thumbnail from Embedded preview with
Exiv2 for "D:/pics-RAW/RAW/2013/IMG_7139 (1).CR2"
[29904] digikam.metaengine: Exiv2 ( 2 ) :  Directory Image, entry 0x0111: Strip
0 is outside of the data area; ignored.
[29904] 
[29904] digikam.metaengine: Exiv2 ( 2 ) :  Directory SubImage1 has an
unexpected next pointer; ignored.
[29904] 
[29904] digikam.metaengine: Exiv2 ( 2 ) :  Directory SubImage1, entry 0x0001
has unknown Exif (TIFF) type 0; setting type size 1.
[29904] 
[29904] digikam.metaengine: Exiv2 ( 3 ) :  Offset of directory SubImage1, entry
0x0001 is out of bounds: Offset = 0x0005829d; truncating the entry
[29904] 
[29904] digikam.metaengine: Exiv2 ( 2 ) :  Directory SubImage1, entry 0x0001
has unknown Exif (TIFF) type 0; setting type size 1.
[29904] 
[29904] digikam.metaengine: Exiv2 ( 3 ) :  Offset of directory SubImage1, entry
0x0001 is out of bounds: Offset = 0x00038827; truncating the entry
[29904] 
[29904] digikam.metaengine: Exiv2 ( 2 ) :  Directory SubImage1, entry 0x0001
has unknown Exif (TIFF) type 0; setting type size 1.
[29904] 
[29904] digikam.metaengine: Exiv2 ( 3 ) :  Offset of directory SubImage1, entry
0x0001 is out of bounds: Offset = 0x00079000; truncating the entry
[29904] 
[29904] digikam.metaengine: Exiv2 ( 2 ) :  Directory SubImage1, entry 0x0004
has unknown Exif (TIFF) type 0; setting type size 1.
[29904] 
[29904] digikam.metaengine: Exiv2 ( 3 ) :  Directory SubImage1, entry 0x0004
has invalid size 808596016*1; skipping entry.
[29904] 
[29904] digikam.metaengine: Exiv2 ( 2 ) :  Directory SubImage1, entry 0x0014
has unknown Exif (TIFF) type 0; setting type size 1.
[29904] 
[29904] digikam.metaengine: Exiv2 ( 3 ) :  Offset of directory SubImage1, entry
0x0014 is out of bounds: Offset = 0x00029004; truncating the entry

... are warnings from Exiv2 library i charge to extract metadata from file.
some chunk exceeds the limit from the TIFF norm, and are truncated. That all.
CR2 files are TIFF with private extensions from Canon, this explain that.

These message are typical more problematic : 

[29904] digikam.rawengine: LibRaw: loadEmbeddedPreview from
"D:/pics-RAW/RAW/2013/IMG_7139 (1).CR2"
[29904] digikam.rawengine: LibRaw: failed to run open_file:  Unsupported file
format or not RAW file
[29904] digikam.rawengine: Failed to load embedded RAW preview
[29904] digikam.general: Trying to get thumbnail from half preview with libraw
for "D:/pics-RAW/RAW/2013/IMG_7139 (1).CR2"
[29904] digikam.rawengine: Try to use reduced RAW picture extraction
[29904] digikam.rawengine: LibRaw: failed to run open_file:  Unsupported file
format or not RAW file

These come from Libraw engine used to handle RAW file contents. CR2 are
supported since a while, so the file information must be taken without
exception. I would to double check this file on my computer to see if i can
reproduce this error here.

Gilles Caulier

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