return 0, nil
	}
	return fixCount(syscall.Write(f.fd, b))
}

// pwrite writes len(b) bytes to the File starting at byte offset off.
// It returns the number of bytes written and an error, if any.
// Since Plan 9 preserves message boundaries, never allow
// a zero-byte write.
func (f *File) pwrite(b []byte, off int64) (n int, err error) {
	if err := f.writeLock(); err != nil {
		return 0, err
	}

	return pread(fd, buf, n, -1)
}

//go:nosplit
func write1(fd uintptr, buf unsafe.Pointer, n int32) int32 {
	return pwrite(int32(fd), buf, n, -1)
}

var _badsignal = []byte("runtime: signal received on thread not created by Go.\n")

// This runs on a foreign stack, without an m or a g. No stack split.
//
//go:nosplit
func badsignal2() {
	pwrite(2, unsafe.Pointer(&_badsignal[0]), int32(len(_badsignal)), -1)

//               |           |
//               v           |
//             Write         |
//               |           |
//               v           |
//           NextIteration --+
//
// we won't put (Read, Write) in the returned set.  This is fine if
// auto-clustering can only cluster the Read->Write edge, but it is a problem if
// it clusters the Write->NextIteration->Merge->Read edges instead.  So we rely

		}
	}
	if msan.Enabled && n > 0 {
		msan.Write(unsafe.Pointer(&p[0]), uintptr(n))
	}
	if asan.Enabled && n > 0 {
		asan.Write(unsafe.Pointer(&p[0]), uintptr(n))
	}
	return
}

func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
	if race.Enabled {
		race.ReleaseMerge(unsafe.Pointer(&ioSync))
	}
	n, err = pwrite(fd, p, offset)
	if race.Enabled && n > 0 {

		}
	}
	return n, nil
}

// Pwrite emulates the Unix pwrite system call.
func (fd *FD) Pwrite(buf []byte, off int64) (int, error) {
	if fd.kind == kindPipe {
		// Pwrite does not work with pipes
		return 0, syscall.ESPIPE
	}
	// Call incref, not writeLock, because since pwrite specifies the
	// offset it is independent from other writes.
	if err := fd.incref(); err != nil {
		return 0, err
	}

	return io.Copy(fileWithoutReadFrom{File: f}, r)
}

// Write writes len(b) bytes from b to the File.
// It returns the number of bytes written and an error, if any.
// Write returns a non-nil error when n != len(b).
func (f *File) Write(b []byte) (n int, err error) {
	if err := f.checkValid("write"); err != nil {
		return 0, err
	}
	n, e := f.write(b)
	if n < 0 {
		n = 0
	}
	if n != len(b) {

        }

        @Override
        public void write(Encoder encoder, DefaultNestedTestSuiteDescriptor value) throws Exception {
            idSerializer.write(encoder, (CompositeIdGenerator.CompositeId) value.getId());
            encoder.writeString(value.getName());
            encoder.writeString(value.getDisplayName());
            idSerializer.write(encoder, value.getParentId());
        }
    }

    @NonNullApi

                throw new DictionaryException("Failed to write: " + oldItem + " -> " + item, e);
            }
        }

        public void write(final String line) {
            try {
                writer.write(line);
                writer.write(Constants.LINE_SEPARATOR);
            } catch (final IOException e) {
                throw new DictionaryException("Failed to write: " + line, e);
            }
        }

				t.Fatalf("write failed: %v", err)
			}
			wroteBytes += n
			wrote.Write(buf[:n])
			debugln("WRITE 4\t", n, wroteBytes)

			// TryWriteByte
			err = rb.TryWriteByte(buf[0])
			if err != nil && err != ErrAcquireLock && err != ErrTooMuchDataToWrite && err != ErrIsFull {
				t.Fatalf("write failed: %v", err)
			}
			if err == nil {
				wroteBytes++
				wrote.Write(buf[:1])
				debugln("WRITE 5\t", 1, wroteBytes)

                        out.write('\\');
                        out.write('n');
                        break;
                    case '\t':
                        out.write('\\');
                        out.write('t');
                        break;
                    case '\f':
                        out.write('\\');
                        out.write('f');
                        break;