test/passes/dce_vacuum.wast - external/github.com/WebAssembly/binaryen - Git at Google

 (module
   (func $__Z12serveroptionPc (result i32)
     (block $switch$0
       (return
         (i32.const 0)
       )
       (br $switch$0)
     )
     (return
       (i32.const 0)
     )
   )
 )
	(module
	(func $__Z12serveroptionPc (result i32)
	(block $switch$0
	(return
	(i32.const 0)
	)
	(br $switch$0)
	)
	(return
	(i32.const 0)
	)
	)
	)