31 lines
882 B
Go
31 lines
882 B
Go
// 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 ignore
|
|
|
|
package runtime_test
|
|
|
|
import (
|
|
"runtime"
|
|
"runtime/internal/sys"
|
|
"testing"
|
|
)
|
|
|
|
// 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)
|
|
}
|
|
}
|