// 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.

//go:build !darwin

package ld

		Offset:  0,
		Length:  int64(size - cursize),
	}

	_, err = fcntl(int(out.f.Fd()), syscall.F_PREALLOCATE, int(uintptr(unsafe.Pointer(store))))
	return err
}

func (out *OutBuf) purgeSignatureCache() {
	// Apparently, the Darwin kernel may cache the code signature at mmap.
	// When we mmap the output buffer, it doesn't have a code signature
	// (as we haven't generated one). Invalidate the kernel cache now that

var viewCloseError = errors.New("cannot Close OutBuf from View")

func (out *OutBuf) Close() error {
	if out.isView {
		return viewCloseError
	}
	if out.isMmapped() {
		out.copyHeap()
		out.purgeSignatureCache()
		out.munmap()
	}
	if out.f == nil {
		return nil
	}
	if len(out.heap) != 0 {
		if _, err := out.f.Write(out.heap); err != nil {
			return err
		}
	}