Initial commit: Go 1.23 release state

test/fixedbugs/issue4562.go

@@ -0,0 +1,49 @@
+// run
+
+// Copyright 2012 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.
+
+package main
+
+import (
+	"fmt"
+	"runtime"
+	"strings"
+)
+
+type T struct {
+	val int
+}
+
+func main() {
+	defer expectError(22)
+	var pT *T
+	switch pT.val { // error should be here - line 22
+	case 0:
+		fmt.Println("0")
+	case 1: // used to show up here instead
+		fmt.Println("1")
+	case 2:
+		fmt.Println("2")
+	}
+	fmt.Println("finished")
+}
+
+func expectError(expectLine int) {
+	if recover() == nil {
+		panic("did not crash")
+	}
+	for i := 1;; i++ {
+		_, file, line, ok := runtime.Caller(i)
+		if !ok {
+			panic("cannot find issue4562.go on stack")
+		}
+		if strings.HasSuffix(file, "issue4562.go") {
+			if line != expectLine {
+				panic(fmt.Sprintf("crashed at line %d, wanted line %d", line, expectLine))
+			}
+			break
+		}
+	}
+}