go source for verification 2026-05-22

test/fixedbugs/issue61187.go

@@ -0,0 +1,22 @@
+// compile
+
+// Copyright 2023 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"
+	"reflect"
+	"unsafe"
+)
+
+var slice = []byte{'H', 'e', 'l', 'l', 'o', ','}
+
+func main() {
+	ptr := uintptr(unsafe.Pointer(&slice)) + 100
+	header := (*reflect.SliceHeader)(unsafe.Pointer(ptr))
+	header.Data += 1
+	fmt.Printf("%d %d\n", cap(slice), header.Cap)
+}