| // errorcheck -0 -live -l -d=compilelater,eagerwb |
| |
| // Copyright 2017 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 20250: liveness differed with concurrent compilation |
| // due to propagation of addrtaken to outer variables for |
| // closure variables. |
| |
| // TODO(austin): This expects function calls to the write barrier, so |
| // we enable the legacy eager write barrier. Fix this once the |
| // buffered write barrier works on all arches. |
| |
| package p |
| |
| type T struct { |
| s string |
| } |
| |
| func f(a T) { // ERROR "live at entry to f: a" |
| var e interface{} |
| func() { // ERROR "live at entry to f.func1: a &e" |
| e = a.s // ERROR "live at call to convT2Estring: a &e" "live at call to writebarrierptr: a" |
| }() // ERROR "live at call to f.func1: e$" |
| // Before the fix, both a and e were live at the previous line. |
| _ = e |
| } |
