Known problems with Perlmacs:

Crashes when converting circular structures.

On some machines, crashes or fails to start up when DISPLAY is set.
Perhaps only X11R5.

After `M-x perl-load-file t/40_error.t': panic: restartop (fixed?)

Error message should report the application line number, not the line
in Lisp.pm that enters XS and not (normally) a full stack trace.

GCC warns about incompatible pointer types in alloc.c.

emacs-perlmacs.diff contains problematic stuff /^(Only|diff)/ Also,
Makefile.PL should chmod -R u+w emacs-20.6 after unzipping for the
benefit of older Patch programs.

Circular dependencies in Makefile:
make[1]: Circular src <- perl/Makefile dependency dropped.
make[1]: Circular src <- lib-src dependency dropped.

`make install' prints error messages from `install-info'.  This may
also affect unpatched emacs-20.6.

Running '/usr/local/bin/perl -I/usr/local/lib/perl5/5.6.0 /usr/local/lib/perl5/5.6.0/ExtUtils/xsubpp -v 2>&1' exits with status 16777215 at (eval 29) line 17.
perlxsi.c: No such file or directory
perlxs.c: No such file or directory

--disable-perl may no longer work.
