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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
commit | ccd992355df7192993c666236047820244914598 (patch) | |
tree | f00fea65147227b7743083c6148396f74cd66935 /test/fixedbugs/issue16985.go | |
parent | Initial commit. (diff) | |
download | golang-1.21-ccd992355df7192993c666236047820244914598.tar.xz golang-1.21-ccd992355df7192993c666236047820244914598.zip |
Adding upstream version 1.21.8.upstream/1.21.8
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | test/fixedbugs/issue16985.go | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/test/fixedbugs/issue16985.go b/test/fixedbugs/issue16985.go new file mode 100644 index 0000000..0cb0dae --- /dev/null +++ b/test/fixedbugs/issue16985.go @@ -0,0 +1,37 @@ +// 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. + +// issue 16985: intrinsified AMD64 atomic ops should clobber flags + +package main + +import "sync/atomic" + +var count uint32 + +func main() { + buffer := []byte("T") + for i := 0; i < len(buffer); { + atomic.AddUint32(&count, 1) + _ = buffer[i] + i++ + i++ + } + + for i := 0; i < len(buffer); { + atomic.CompareAndSwapUint32(&count, 0, 1) + _ = buffer[i] + i++ + i++ + } + + for i := 0; i < len(buffer); { + atomic.SwapUint32(&count, 1) + _ = buffer[i] + i++ + i++ + } +} |