gcj/271: .java files are not compiled on demand (alt. unclear error)

[osk at hem dot passagen dot se]

>Number:         271
>Category:       gcj
>Synopsis:       .java files are not compiled on demand (alt. unclear error)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    apbianco
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jul 01 12:40:00 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Oskar Liljeblad
>Release:        unknown-1.0
>Organization:
>Environment:
Debian GNU/Linux
GNU libc 2.1.3
gcc 2.96 snapshot 20000612
libgcj snapshot 2000-06-18
>Description:
Save the three attached source files and make sure the classes
haven't been compiled to .class or .o. Compilation in this order
gives:

  $ gcj -c Super.java
  $ gcj -C Test.java
  $ gcj -c Test.class
  Test.java:3: unexpected type on stack

This is caused by the fact that no UncompiledSub.class/.o
is available. I think that the error message printed should
indicate that the "unexpected type" is actually
UncompiledSub. (It took me some time to figure out what was
wrong here. A better error message would have helped.)

As an alternative, the UncompiledSub.java file could be automaticly
compiled when compiling Test.class.

Super.java:
public class Super { }

UncompiledSub.java:
public class UncompiledSub extends Super { }

Test.java:
public class Test {
	public void doSomething(Super o) {
		if (o instanceof UncompiledSub) {
			System.out.println("Do something different");
		}
	}
}
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: