(module
 (type $0 (func))
 ;;@ src.cpp:1:1
 (func $0 (; 0 ;) (type $0)
  (nop)
  ;;@ src.cpp:2:1
  (block $label$1
   ;;@ src.cpp:2:2
   (block $label$2
    (br $label$2)
   )
  )
  ;;@ src.cpp:3:1
  (return)
  ;;@ src.cpp:3:2
 )
)