blob: cf240c1350b7bc80a30a4f6de9200e864d0f4ebc [file] [log] [blame]
// 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.
// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris
package runtime_test
import (
// Test that the error value returned by mmap is positive, as that is
// what the code in mem_bsd.go, mem_darwin.go, and mem_linux.go expects.
// See the uses of ENOMEM in sysMap in those files.
func TestMmapErrorSign(t *testing.T) {
p := runtime.Mmap(nil, ^uintptr(0)&^(sys.PhysPageSize-1), 0, runtime.MAP_ANON|runtime.MAP_PRIVATE, -1, 0)
// The runtime.mmap function is nosplit, but t.Errorf is not.
// Reset the pointer so that we don't get an "invalid stack
// pointer" error from t.Errorf if we call it.
v := uintptr(p)
p = nil
if v != runtime.ENOMEM {
t.Errorf("mmap = %v, want %v", v, runtime.ENOMEM)