DO NOT REPLY [Bug 21497] New: - javac succeeds when it should fail

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=21497

javac succeeds when it should fail

           Summary: javac succeeds when it should fail
           Product: Ant
           Version: 1.5.2
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Core tasks
        AssignedTo: dev@ant.apache.org
        ReportedBy: ts@appliedgenerics.com


This behaviour is observed:

1. Run Ant, and javac fails due to a bug in the source code being compiled. Fair
enough.
2. Run Ant again and it appears to succeed even though the buggy class was not
compiled (so the software will not work).

The particular problem is that if you tell the Ant javac task to compile a class
Top which imports Middle, which in turn imports Bottom, and Bottom has compile
time errors that do not affect its method signature, then Top and Middle will be
built successfully but Bottom will not be. On a subsequent run, the javac task
only tries to build Top, which checks only Middle and so Bottom is never rebuilt.

It looks as though bug 13409 could have been the same thing, but the reporter
gave insufficent detail and the bug was marked as in valid.
http://issues.apache.org/bugzilla/show_bug.cgi?id=13409

It's unlikely, but http://issues.apache.org/bugzilla/show_bug.cgi?id=14808 just
might be related, since it's about javac being happy when an output file is missing.

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