Initial commit: Go 1.23 release state

test/fixedbugs/issue17449.go

@@ -0,0 +1,36 @@
+// errorcheck -0 -race
+
+//go:build (linux && amd64) || (linux && ppc64le) || (darwin && amd64) || (freebsd && amd64) || (netbsd && amd64) || (windows && amd64)
+
+// Copyright 2016 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.
+
+// Issue 17449: race instrumentation copies over previous instrumented nodes from parents block into child's Ninit block.
+// This code surfaces the duplication at compile time because of generated inline labels.
+
+package master
+
+type PriorityList struct {
+    elems []interface{}
+}
+
+func (x *PriorityList) Len() int { return len(x.elems) }
+
+func (l *PriorityList) remove(i int) interface{} {
+    elem := l.elems[i]
+    l.elems = append(l.elems[:i], l.elems[i+1:]...)
+    return elem
+}
+
+func (l *PriorityList) Next() interface{} {
+    return l.remove(l.Len() - 1)
+}
+
+var l *PriorityList
+
+func Foo() {
+    // It would fail here if instrumented code (including inline-label) was copied.
+    for elem := l.Next(); elem != nil; elem = l.Next() {
+    }
+}