test/t20_nested.nsc

global i32 main(void) {
	i32 r = 0;
	i32 i = 0;
	while (i < 2) {
		switch (i) {
		case 0: r = r + 10; break;
		case 1: r = r + 20; break;
		default: r = 0;
		}
		i = i + 1;
	}
	return r;
}