test: Fix failing tests

vendor/modernc.org/memory/mmap_freebsd_64.go

@@ -0,0 +1,22 @@
+// Copyright 2009 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-GO file.
+
+//go:build (freebsd && amd64) || (freebsd && arm64)
+// +build freebsd,amd64 freebsd,arm64
+
+package memory
+
+import (
+	"syscall"
+)
+
+// https://cs.opensource.google/go/go/+/refs/tags/go1.17.8:src/syscall/zsyscall_freebsd_amd64.go;l=1337-1346
+func mmapSyscall(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) {
+	r0, _, e1 := syscall.Syscall6(syscall.SYS_MMAP, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flag), uintptr(fd), uintptr(pos))
+	ret = uintptr(r0)
+	if e1 != 0 {
+		err = e1
+	}
+	return
+}