[GitHub] lgov opened a new pull request #12999: [Issue #11912] throw mxnet exceptions when decoding invalid images.

[GitBox <gi...@apache.org>]

lgov opened a new pull request #12999: [Issue #11912] throw mxnet exceptions when decoding invalid images.
URL: https://github.com/apache/incubator-mxnet/pull/12999
 
 
   ## Description ##
   Check for invalid images before we pass them to OpenCV and throw a normal exception. Exceptions we can handle, OpenCV assertions not.
   
   ## Checklist ##
   ### Essentials ###
   Please feel free to remove inapplicable items for your PR.
   - [X ] Changes are complete (i.e. I finished coding on this PR)
   - [ X] All changes have test coverage:
   - Unit tests are added for small changes to verify correctness (e.g. adding a new operator)
   - [x ] To the my best knowledge, examples are either not affected by this change, or have been fixed to be compatible with this change
   
   ### Changes ###
   - Raise an excption when passing an empty buffer to imdecode.
   - Raise an exception when passing an invalid data buffer to imdecode. 
   

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