go source for verification 2026-05-22

test/fixedbugs/issue69434.go

@@ -0,0 +1,61 @@
+// run
+
+// Copyright 2024 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 (
+	"iter"
+)
+
+func All() iter.Seq[int] {
+	return func(yield func(int) bool) {
+		for i := 0; i < 10; i++ {
+			growStack(512)
+			if !yield(i) {
+				return
+			}
+		}
+	}
+}
+
+type S struct {
+	round int
+}
+
+func NewS(round int) *S {
+	s := &S{round: round}
+	return s
+}
+
+func (s *S) check(round int) {
+	if s.round != round {
+		panic("bad round")
+	}
+}
+
+func f() {
+	rounds := 0
+	s := NewS(rounds)
+	s.check(rounds)
+
+	for range All() {
+		s.check(rounds)
+		rounds++
+		s = NewS(rounds)
+		s.check(rounds)
+	}
+}
+
+func growStack(i int) {
+	if i == 0 {
+		return
+	}
+	growStack(i - 1)
+}
+
+func main() {
+	f()
+}