[Bug classpath/26220] New: InputStreamReader(, CharSet) creates broken reader

[andy dot seaborne at hp dot com]

Setup: ikvm 0.24.0.1 (as JVM), Java 1.4.2_10

Of the three constructors for InputStreamReader that allow the app to set
the Charset, the one where the Charset is passed directly does not give a
Reader that can read the data.

Charset cs = Charset.forName("utf-8");
new InputStreamReader(ins, cs.newDecoder()); // Works
new InputStreamReader(ins, "utf-8");         // Works
new InputStreamReader(ins, cs);              // Does not work

The test program should print 104 each time but does not do so in the third
case.  Workaround: use the constructor with cs.newDecoder().

Couldn't find a bug like this in bugzilla - apologies if it is a duplicate.

    Andy

Test program:
public static void main(String[] argv)
    {
        System.out.println("<<<<<<<<<<<<<<<");
        try {
            Charset cs = Charset.forName("utf-8");
            {
                ByteArrayInputStream ins = new ByteArrayInputStream("hello
world".getBytes()) ;
                Reader r = new InputStreamReader(ins, cs.newDecoder());
                System.out.println("With decoder: .read()         =>
"+r.read()) ;
            }
            System.out.println("---------------");
            // ----
            {
                ByteArrayInputStream ins = new ByteArrayInputStream("hello
world".getBytes()) ;
                Reader r = new InputStreamReader(ins, "utf-8");
                System.out.println("With charset name: .read()    =>
"+r.read()) ;
            }
            System.out.println("---------------");
            // ----
            {
                ByteArrayInputStream ins = new ByteArrayInputStream("hello
world".getBytes()) ;
                Reader r = new InputStreamReader(ins, cs);
                System.out.println("With charset object: .read()  =>
"+r.read()) ;
            }
        } catch (Exception ex)
        {
            System.err.println("IO exception: "+ex.getMessage()) ;
        }
        System.out.println(">>>>>>>>>>>>>>>");
    }


-- 
           Summary: InputStreamReader(,CharSet) creates broken reader
           Product: classpath
           Version: 0.20
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: classpath
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: andy dot seaborne at hp dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26220