Fix: update calls to runtime.fastrand to use cheaprand for compatibility with Go 1.22

src/x/unsafe/rand.go

@@ -21,13 +21,6 @@
 // Package unsafe contains operations that step around the type safety of Go programs.
 package unsafe
 
-import (
-	_ "unsafe" // needed for go:linkname hack
-)
-
-//go:linkname fastrand runtime.fastrand
-func fastrand() uint32
-
 // Fastrandn returns a uint32 in range of 0..n, like rand() % n, but faster not as precise,
 // https://lemire.me/blog/2016/06/27/a-fast-alternative-to-the-modulo-reduction/
 func Fastrandn(n uint32) uint32 {

src/x/unsafe/runtime.go

@@ -0,0 +1,31 @@
+//go:build !go1.22
+
+// Copyright (c) 2020 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// Package unsafe contains operations that step around the type safety of Go programs.
+package unsafe
+
+import (
+	_ "unsafe" // needed for go:linkname hack
+)
+
+//go:linkname fastrand runtime.fastrand
+func fastrand() uint32

src/x/unsafe/runtime_1.22.go

@@ -0,0 +1,31 @@
+//go:build go1.22
+
+// Copyright (c) 2020 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+// Package unsafe contains operations that step around the type safety of Go programs.
+package unsafe
+
+import (
+	_ "unsafe" // needed for go:linkname hack
+)
+
+//go:linkname fastrand runtime.cheaprand
+func fastrand() uint32