We were modifying libjava/java/lang/Character.java and rebuilding, and libgcj-4.2.0.jar wasn't being rebuilt. I didn't try to figure out why but I thought I'd file the issue since others have seen it too.
-- Summary: libgcj-4.2.0.jar not rebuilt after a source file change Product: gcc Version: 4.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: java AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: fitzsim at redhat dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26625