[Bug java/11623] New: wrong debug file name info when compiling from .class

["tromey at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11623

           Summary: wrong debug file name info when compiling from .class
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: java
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tromey at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org

A java .class file only contains the base name of its
corresponding source file.  gcj copies this verbatim
into the resulting object file.

This means that when debugging with gdb I have to
add a large number of directories to the search path
to find all the .java files (in my scenario I can
only compile from .class files)

I think it would be useful if gcj instead prepended
the class' package, considered as a directory tree.

For example, if I compile "org/foo/bar/Doit.class",
right now gdb will end up looking for "Doit.java".
I'd prefer it to look for "org/foo/bar/Doit.java".

This isn't perfect, but it would greatly reduce the
number of "dir" commands I have to run, at least for
the most common way to structure java packages.