| // Copyright 2021 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 ( |
| "strings" |
| |
| "issue20014.dir/a" |
| ) |
| |
| func main() { |
| samePackage() |
| crossPackage() |
| // Print fields registered with field tracking. |
| for _, line := range strings.Split(fieldTrackInfo, "\n") { |
| if line == "" { |
| continue |
| } |
| println(strings.Split(line, "\t")[0]) |
| } |
| } |
| |
| type T struct { |
| X int `go:"track"` |
| Y int `go:"track"` |
| Z int // untracked |
| } |
| |
| func (t *T) GetX() int { |
| return t.X |
| } |
| func (t *T) GetY() int { |
| return t.Y |
| } |
| func (t *T) GetZ() int { |
| return t.Z |
| } |
| |
| func samePackage() { |
| var t T |
| println(t.GetX()) |
| println(t.GetZ()) |
| } |
| |
| func crossPackage() { |
| var t a.T |
| println(t.GetX()) |
| println(t.GetZ()) |
| } |
| |
| // This global variable is set by the linker using the -k option. |
| var fieldTrackInfo string |