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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:14:23 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:14:23 +0000 |
commit | 73df946d56c74384511a194dd01dbe099584fd1a (patch) | |
tree | fd0bcea490dd81327ddfbb31e215439672c9a068 /test/fixedbugs/issue15281.go | |
parent | Initial commit. (diff) | |
download | golang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.tar.xz golang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.zip |
Adding upstream version 1.16.10.upstream/1.16.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'test/fixedbugs/issue15281.go')
-rw-r--r-- | test/fixedbugs/issue15281.go | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/test/fixedbugs/issue15281.go b/test/fixedbugs/issue15281.go new file mode 100644 index 0000000..390867c --- /dev/null +++ b/test/fixedbugs/issue15281.go @@ -0,0 +1,65 @@ +// run + +// Copyright 2016 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 "runtime" + +func main() { + { + x := inuse() + c := make(chan []byte, 10) + c <- make([]byte, 10<<20) + close(c) + f1(c, x) + } + { + x := inuse() + c := make(chan []byte, 10) + c <- make([]byte, 10<<20) + close(c) + f2(c, x) + } +} + +func f1(c chan []byte, start int64) { + for x := range c { + if delta := inuse() - start; delta < 9<<20 { + println("BUG: f1: after alloc: expected delta at least 9MB, got: ", delta) + println(x) + } + x = nil + if delta := inuse() - start; delta > 1<<20 { + println("BUG: f1: after alloc: expected delta below 1MB, got: ", delta) + println(x) + } + } +} + +func f2(c chan []byte, start int64) { + for { + x, ok := <-c + if !ok { + break + } + if delta := inuse() - start; delta < 9<<20 { + println("BUG: f2: after alloc: expected delta at least 9MB, got: ", delta) + println(x) + } + x = nil + if delta := inuse() - start; delta > 1<<20 { + println("BUG: f2: after alloc: expected delta below 1MB, got: ", delta) + println(x) + } + } +} + +func inuse() int64 { + runtime.GC() + var st runtime.MemStats + runtime.ReadMemStats(&st) + return int64(st.Alloc) +} |