Sometimes when I reconfigure libgcj, configure decides that mmap doesn't work on my machine. This breaks the .db feature. I don't know exactly how to reproduce, but I have seen it more than once.
-- Summary: sometimes reconfiguring leads to incorrect config.h Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: libgcj 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,java-prs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19877