[lang-ref] ( block_scope ) ( swift )

@Test func blockScope() {
	// do { .. }

	let v = 5
	do {
		let v = 1
		#expect(v == 1)
	}
	#expect(v == 5)
	do {
		let v = 3
		#expect(v == 3)
	}
	#expect(v == 5)
}