Though I don't think coming up with code to fix it is the issue here, in comment #10 a patch was provided (which admittedly I haven't tested personally) to turn a void cast into a temporary assignment (which I believe would have been optimized out later in the pipeline) so I wonder why that hasn't really gone forward...
(In reply to Manuel López-Ibáñez from comments)
Don't worry, I got what you mean...
Though I don't think coming up with code to fix it is the issue here, in comment #10 a patch was provided (which admittedly I haven't tested personally) to turn a void cast into a temporary assignment (which I believe would have been optimized out later in the pipeline) so I wonder why that hasn't really gone forward...
Cheers,
Filipe