Index: src/examples/control_structures.c
===================================================================
--- src/examples/control_structures.c	(revision 6e7e2b36dcaa528c1778f81efe7654e171fb2197)
+++ src/examples/control_structures.c	(revision 4162aea970265c10df9b12f66ffeb5cbbec83b74)
@@ -18,4 +18,5 @@
 		L2: switch ( 3_333_333 ) {						// underscores in constant
 			case 1,2,3:									// 4~8, 4...8 not working
+			case 4~8:
 				L3: for ( ;; ) {
 					L4: for ( ;; ) {