Re: bootstrap problem with union Lisp_Object

[Richard M. Stallman]

    I'm still trying to track this down, but just for the record: If I  
    build recent sources with CC='gcc -DENABLE_CHECKING - 
    DUSE_LISP_UNION_TYPE', bootstrapping fails:

    Compiling /var/raeburn/emacs-hacking/fsf/source/lisp/emacs-lisp/byte- 
    opt.el
    Error: Invalid function: 4

First step: try running it under GDB with a breakpoint at Fsignal, and
see the immediate cause of that error.