The following code will cause a compiler error:

%> javac t.java
ERROR: sun.tools.java.CompilerError: stack under flow: 11: putfield boolean publicFlag = -1
-- listing --
$6:
11: aload 0
11: getfield t this$0
11: aload 0
11: getfield t this$0
11: iconst_1 1
11: invokestatic void access$1(t, boolean)
11: putfield boolean publicFlag
10: return
sun.tools.java.CompilerError: stack under flow: 11: putfield boolean publicFlag = -1
        at sun.tools.asm.Assembler.balance(Assembler.java:246)
        at sun.tools.asm.Assembler.write(Assembler.java:378)
        at sun.tools.javac.SourceClass.compileClass(SourceClass.java:1969)
        at sun.tools.javac.SourceClass.compile(SourceClass.java:1690)
        at sun.tools.javac.Main.compile(Main.java:408)
        at sun.tools.javac.Main.main(Main.java:571)
error: An error has occurred in the compiler; please file a bug report (http://java.sun.com/cgi-bin/bugreport.cgi).
1 error

//code for t.java:
public class t {
    public boolean publicFlag;
    private boolean privateFlag;

    public t() {
        publicFlag = privateFlag = true;
    }

    class inner {
        public void innerMethod() {
            publicFlag = privateFlag = true;
        }
    }
}

Note that it is not a problem if privateFlag is declared 'public'.
Note that it is still a problem if publicFlag is declared 'private'.

I have verified this both on Solaris using 1.2beta3-N and 1.1.6N.

dale.mcduffie@Eng 1998-04-23