Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/test/fixedbugs/issue36516.go b/test/fixedbugs/issue36516.go
new file mode 100644
index 0000000..d4e28b6
--- /dev/null
+++ b/test/fixedbugs/issue36516.go
@@ -0,0 +1,27 @@
+// +build cgo,linux,amd64
+// run -race
+
+// Copyright 2020 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 (
+	"fmt"
+	"testing"
+	"unsafe"
+)
+
+var buf [2]byte
+var x unsafe.Pointer = unsafe.Pointer(&buf[0])
+
+func main() {
+	n := testing.AllocsPerRun(1000, func() {
+		x = unsafe.Pointer(uintptr(x) + 1)
+		x = unsafe.Pointer(uintptr(x) - 1)
+	})
+	if n > 0 {
+		panic(fmt.Sprintf("too many allocations; want 0 got %f", n))
+	}
+}