test/parse/expr/expr-br.txt - external/github.com/WebAssembly/wabt - Git at Google

 ;;; TOOL: wat2wasm
 (module
   (func (result i32)
     block $exit (result i32)
       i32.const 0
       br 0
     end))
	;;; TOOL: wat2wasm
	(module
	(func (result i32)
	block $exit (result i32)
	i32.const 0
	br 0
	end))