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master
test/fixedbugs/issue25516.go
26 строк
558 B
Keith Randall
cmd/compile: update WBLoads during deadcode
29 май 2018, 20:45
29 май 2018, 20:45
db9341a
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// compile // Copyright 2018 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. // Make sure dead write barriers are handled correctly. package main func f(p **int) { // The trick here is to eliminate the block containing the write barrier, // but only after the write barrier branches are inserted. // This requires some delicate code. i := 0 var b []bool var s string for true { if b[i] { var a []string s = a[len(s)] i = 0 } *p = nil } }