Bug 578382

Description of problem:

A simple test program that utilises PrintServiceLookup.lookupPrintServices with an appropriate DocFlavor fails to return a list of printers under gcj. Yet the same program built and run under any conventional JRE I could find does return printers and status.

Version-Release number of selected component (if applicable):


I tested on the following:

 /usr/bin/gcj -V
gcj: '-V' option must have argument
[meon@aserver 649443]$ /usr/bin/gcj -v
Using built-in specs.
Reading specs from /usr/lib/gcc/x86_64-redhat-linux/4.4.1/libgcj.spec
rename spec startfile to startfileorig
rename spec lib to liborig
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --enable-plugin --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic --with-arch_32=i586 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.4.1 20090725 (Red Hat 4.4.1-2) (GCC) 

How reproducible:
100%

Steps to Reproduce:

1. Create a listprinters.java file with the simple test code
2. Build a binary  gcj -o listprinters --main=listprinters ./listprinters.java
3.  Run the binary 
  
Actual results:
Receive "found 0 services" response from the test program run via gcj.

Expected results:
The gcj executable should display the same printers available on the host as the program run via any conventional JRE does.

Additional info:

I have found that this works under gcj :


import javax.print.attribute.standard.PrinterIsAcceptingJobs;
import javax.print.PrintService;
import javax.print.PrintServiceLookup;


class listprinters {



        public static void main(String[] argv) {
                PrintService ss[] = PrintServiceLookup.lookupPrintServices(null,null);
                System.out.println("found " + ss.length + " services");
                for(int i = 0; i < ss.length; i++) {
                        javax.print.attribute.Attribute att[] = ss[i].getAttributes().toArray();
                        System.out.println("found " + att.length + " attributes for " + ss[i].getName());
                        for(int j = 0; j < att.length; j++)
                                System.out.println(ss[i].getName() + "/" + att[j].getName() +
                                        (att[j].equals(PrinterIsAcceptingJobs.ACCEPTING_JOBS) ?
                                        "" : "not") + " accepting jobs"
                                );
                }
        }
}



Yet the following does not:

import javax.print.attribute.standard.PrinterIsAcceptingJobs;
import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import javax.print.DocFlavor;


class listprinters {



        public static void main(String[] argv) {
                /*PrintService ss[] = PrintServiceLookup.lookupPrintServices(null,null);*/
                PrintService ss[] = PrintServiceLookup.lookupPrintServices(DocFlavor.SERVICE_FORMATTED.PAGEABLE, null);
                System.out.println("found " + ss.length + " services");
                for(int i = 0; i < ss.length; i++) {
                        javax.print.attribute.Attribute att[] = ss[i].getAttributes().toArray();
                        System.out.println("found " + att.length + " attributes for " + ss[i].getName());
                        for(int j = 0; j < att.length; j++)
                                System.out.println(ss[i].getName() + "/" + att[j].getName() +
                                        (att[j].equals(PrinterIsAcceptingJobs.ACCEPTING_JOBS) ?
                                        "" : "not") + " accepting jobs"
                                );
                }
        }
}



I used DocFlavor.SERVICE_FORMATTED.PAGEABLE,null as args  to lookupPrintServices. In a standard JRE, it gets a list of printers but in GCJ it fails to return any.

This appears to be a problem in the way it uses DocFlavor I think.