[FFmpeg-devel] [PATCH V6 4/6] lavu: add side data AV_FRAME_DATA_BOUNDING_BOXES

Nicolas George george at nsup.org
Sun Apr 4 17:00:26 EEST 2021

Andreas Rheinhardt (12021-04-04):
> That's a variable-length array. That's a C99 feature we do not require.

We have used variable-length arrays in the past. We have eliminated them
from our code base not because lack of support, IIRC, but because they
have a tendency to ruin compiler optimization.

This is not a variable-length array but a pointer to a variable-length
array, it does not cause the optimization problems. As it is, it is just
a trick to let the compiler compute offsets for us taking into account
alignment requirements.


  Nicolas George
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