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Replacing this compiler with uniform rubbish would be swell (5)

Ross

I believe the answer is:

bulge

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'be swell' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

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(Other definitions for bulge that I've seen before include "Battle of the -----: last major German counter-offensive of WWII (1944)" , "Rounded swelling" , "Protuberance or outward swelling" , "Hitler's offensive" , "Swelling - sudden increase" .)

I've seen this clue in The Telegraph.
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