Re: Emacs 21.4a segmentation fault on startup (gcc 4.0, Solaris 8)

[Richard Stallman]

    The latter possibility could be eliminated from consideration
    permanently if gcc -Wall were the default, and the code was tuned up to
    eliminate (or at least minimize) gcc's warnings.

-Wall warns about a lot of things that are not wrong, and causes
more trouble than it is worth.  I agreed to implement -Wall on the
explicit understanding that we would NOT adopt the goal to change our
code so that -Wall would not warn.

If there is a specific kind of warning that would be useful here,
there is probably an -f option to enable that specific kind of
warning.  That might be a good thing to use for Emacs.