Almost entirely black image from Canon raw file
I have a picture taken with a Canon PowerShot G1 X Mark III which is rendered by darktable 2.6.2 as an almost entirely black image, except in the highlights, which are mostly green. Incidentally, the image was taken with “Highlight tone priority” (D+) enabled, and I have only encountered this problem with another “D+” image, but even with the feature enabled, most RAW files from the camera are rendered correctly. I am not really sure what is different about this one.
Boosting the exposure does not change the black to anything else.
dcraw renders the image correctly, and the out-of-camera JPEG also looks fine.