From 73df946d56c74384511a194dd01dbe099584fd1a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 15:14:23 +0200 Subject: Adding upstream version 1.16.10. Signed-off-by: Daniel Baumann --- test/fixedbugs/issue24449.go | 62 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 test/fixedbugs/issue24449.go (limited to 'test/fixedbugs/issue24449.go') diff --git a/test/fixedbugs/issue24449.go b/test/fixedbugs/issue24449.go new file mode 100644 index 0000000..b236645 --- /dev/null +++ b/test/fixedbugs/issue24449.go @@ -0,0 +1,62 @@ +// run + +// 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. + +package main + +import ( + "sync/atomic" +) + +var cnt32 int32 + +//go:noinline +func test32(a, b []int) bool { + // Try to generate flag value, issue atomic + // adds and then re-use the flag value to see if + // the atomic add has clobbered them. + atomic.AddInt32(&cnt32, 1) + if len(a) == len(b) { + atomic.AddInt32(&cnt32, 2) + } + atomic.AddInt32(&cnt32, 4) + if len(a) >= len(b) { + atomic.AddInt32(&cnt32, 8) + } + if len(a) <= len(b) { + atomic.AddInt32(&cnt32, 16) + } + return atomic.LoadInt32(&cnt32) == 31 +} + +var cnt64 int64 + +//go:noinline +func test64(a, b []int) bool { + // Try to generate flag value, issue atomic + // adds and then re-use the flag value to see if + // the atomic add has clobbered them. + atomic.AddInt64(&cnt64, 1) + if len(a) == len(b) { + atomic.AddInt64(&cnt64, 2) + } + atomic.AddInt64(&cnt64, 4) + if len(a) >= len(b) { + atomic.AddInt64(&cnt64, 8) + } + if len(a) <= len(b) { + atomic.AddInt64(&cnt64, 16) + } + return atomic.LoadInt64(&cnt64) == 31 +} + +func main() { + if !test32([]int{}, []int{}) { + panic("test32") + } + if !test64([]int{}, []int{}) { + panic("test64") + } +} -- cgit v1.2.3