Initial commit: Go 1.23 release state

test/label1.go

@@ -0,0 +1,122 @@
+// errorcheck
+
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Verify that erroneous labels are caught by the compiler.
+// This set is caught by pass 2. That's why this file is label1.go.
+// Does not compile.
+
+package main
+
+var x int
+
+func f1() {
+	switch x {
+	case 1:
+		continue // ERROR "continue is not in a loop$|continue statement not within for"
+	}
+	select {
+	default:
+		continue // ERROR "continue is not in a loop$|continue statement not within for"
+	}
+
+}
+
+func f2() {
+L1:
+	for {
+		if x == 0 {
+			break L1
+		}
+		if x == 1 {
+			continue L1
+		}
+		goto L1
+	}
+
+L2:
+	select {
+	default:
+		if x == 0 {
+			break L2
+		}
+		if x == 1 {
+			continue L2 // ERROR "invalid continue label .*L2|continue is not in a loop$"
+		}
+		goto L2
+	}
+
+	for {
+		if x == 1 {
+			continue L2 // ERROR "invalid continue label .*L2"
+		}
+	}
+
+L3:
+	switch {
+	case x > 10:
+		if x == 11 {
+			break L3
+		}
+		if x == 12 {
+			continue L3 // ERROR "invalid continue label .*L3|continue is not in a loop$"
+		}
+		goto L3
+	}
+
+L4:
+	if true {
+		if x == 13 {
+			break L4 // ERROR "invalid break label .*L4"
+		}
+		if x == 14 {
+			continue L4 // ERROR "invalid continue label .*L4|continue is not in a loop$"
+		}
+		if x == 15 {
+			goto L4
+		}
+	}
+
+L5:
+	f2()
+	if x == 16 {
+		break L5 // ERROR "invalid break label .*L5"
+	}
+	if x == 17 {
+		continue L5 // ERROR "invalid continue label .*L5|continue is not in a loop$"
+	}
+	if x == 18 {
+		goto L5
+	}
+
+	for {
+		if x == 19 {
+			break L1 // ERROR "invalid break label .*L1"
+		}
+		if x == 20 {
+			continue L1 // ERROR "invalid continue label .*L1"
+		}
+		if x == 21 {
+			goto L1
+		}
+	}
+
+	continue // ERROR "continue is not in a loop$|continue statement not within for"
+	for {
+		continue on // ERROR "continue label not defined: on|invalid continue label .*on"
+	}
+
+	break // ERROR "break is not in a loop, switch, or select|break statement not within for or switch or select"
+	for {
+		break dance // ERROR "break label not defined: dance|invalid break label .*dance"
+	}
+
+	for {
+		switch x {
+		case 1:
+			continue
+		}
+	}
+}