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    SubjectRe: [PATCH] Undo some of the pseudo-security madness
    Date
    * Samium Gromoff:

    >> > Lisp environments can produce standalone executables
    >>
    >> If you've got a stand-alone executable, you don't need MAP_FIXED. The
    >> ELF loader maps the program at a fixed address anyway (at least on
    >> i386 and x86_64, I haven't checked others).
    >
    > Not so.
    >
    > The thing is that the picture is of two pieces:
    >
    > - the executable
    > - the unrelocatable lisp core (which is unrelocatable by the virtue
    > of non-PIC code) which is mapped into the AS of the executable.
    >
    > It is the latter which breaks, as its map can overlap with randomized
    > pieces of the executable (along with its libraries).

    I think it boils down to the question if you can use ELF relocations
    to create a relocatable (but not necessarily position-independent)
    object that ld can link with the SBCL run-time system to produce an
    executable. This executable would truly be stand-alone because no
    separate core file is required anymore.
    -
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