Index: src/0dev.org/ioutil/ioutil.go
==================================================================
--- src/0dev.org/ioutil/ioutil.go
+++ src/0dev.org/ioutil/ioutil.go
@@ -29,40 +29,43 @@
 	return ReaderFunc(func(output []byte) (readCount int, e error) {
 		var (
 			bufferLength int = len(buffer)
 			err          error
 		)
-
 	start:
 		// Reply with the buffered data if there is any
 		if bufferLength > 0 {
 			readCount = copy(output, buffer)
 
 			if readCount < bufferLength {
 				// Advance the data in the buffer
-				buffer = buffer[:copy(buffer, buffer[:readCount])]
+				buffer = buffer[:copy(buffer, buffer[readCount:])]
 			} else {
 				// Clear the buffer
 				buffer = buffer[:0]
 			}
-
 			// Stage any error for returning
 			e, err = err, nil
-
 			return readCount, e
 		}
 
 		// Delegate if the buffer is empty and the destination buffer is large enough
 		if len(output) >= size {
-			return reader.Read(output)
+			return reader.Read(output[:len(output)/size])
 		}
 
 		// Extend the buffer up to the desired size and perform a Read
 		buffer = buffer[:size]
 		readCount, err = reader.Read(buffer)
 
 		// Size the buffer down to the read data size and restart
 		buffer = buffer[:readCount]
 		bufferLength = len(buffer)
-		goto start
+
+		if bufferLength > 0 {
+			goto start
+		}
+		// Stage any error for returning
+		e, err = err, nil
+		return 0, e
 	})
 }

Index: src/0dev.org/predictor/predictor_test.go
==================================================================
--- src/0dev.org/predictor/predictor_test.go
+++ src/0dev.org/predictor/predictor_test.go
@@ -138,11 +138,11 @@
 	delta := diff.Diff(diff.D{len(input), len(decompressed),
 		func(i, j int) bool { return input[i] == decompressed[j] }})
 
 	// Return a well-formated error if any differences are found
 	if len(delta.Added) > 0 || len(delta.Removed) > 0 {
-		return fmt.Errorf("Unexpected decompressed output %v\ninput: (%d) %#x\ntrace: (%d) %#x\noutput: (%d) %#x\n",
+		return fmt.Errorf("Unexpected decompressed output %v\ninput:  (%d) %#x\ntrace:  (%d) %#x\noutput: (%d) %#x\n",
 			delta, len(input), input, len(trace), trace, len(decompressed), decompressed)
 	}
 
 	// All is good :)
 	return nil