plugins/groovy/testdata/highlighting/ForLoopWithNestedEndlessLoop.groovy - platform/tools/idea - Git at Google

 for (int x = 1; x < 10; x++) {
   for (;;) {
     println "a"
   }
 }
 def z
 <warning descr="Variable 'z' might not be assigned">z</warning>++
 println z
	for (int x = 1; x < 10; x++) {
	for (;;) {
	println "a"
	}
	}
	def z
	<warning descr="Variable 'z' might not be assigned">z</warning>++
	println z