[HARMONY-6216] problem with reading zero-length file

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 5.0M10
• Fix Version/s: 5.0M12
• Component/s: Classlib
• Environment: RedHat EL 5 x86
• Estimated Complexity: Unknown
• Assignee: Mark Hindess
• Reporter: Kyle Cho
• Created: 29/May/09 17:24
• Updated: 05/Nov/09 08:04
• Resolved: 05/Nov/09 08:04

Description

The following test fails:

----------------------- proc.java starts ------------------
import java.io.*;
class proc {
public static void main(String args[])
{
String s0 = "cpu";
String s = null;
String file= "/proc/cpuinfo"; // zero-length special file
try {
BufferedReader br = new BufferedReader(new FileReader(new File(file)));
do {
if ((s = br.readLine()) == null)

{ break; }

System.out.println("s: "+s);
} while (s.indexOf(s0) == -1);
} catch (IOException ioe)

{ ioe.printStackTrace(); }

System.out.println("s: "+s);
}
}
----------------------- proc.java ends -------------------

java.io.IOException
at org.apache.harmony.luni.platform.OSFileSystem.seek(OSFileSystem.java:110)
at java.io.FileInputStream.available(FileInputStream.java:149)
at java.io.InputStreamReader.read(InputStreamReader.java:249)
at java.io.BufferedReader.fillbuf(BufferedReader.java:107)
at java.io.BufferedReader.readLine(BufferedReader.java:318)
at proc.main(proc.java:11)
s: null