Malfunction is a high-performance, low-level untyped program
representation, designed as a target for compilers of functional
Malfunction is a revolting hack, exposing bits of the OCaml
compiler's guts that were never meant to see the light of day.
"Hello, World" looks like this:
(module (_ (apply (global $Stdlib $print_string) "Hello, world!\n")) (export))
Malfunction requires OCaml (at least version 4.04.0, and you may see
better performance with flambda enabled), which you should install
using OPAM. Then, install malfunction using:
opam pin add malfunction git://github.com/stedolan/malfunction.git
You can then compile and run the above example with:
malfunction compile docs/helloworld.mlf -o hello ./hello
The syntax is based on s-expressions, and is designed to be easy to
correctly generate, rather than to be particularly beautiful. For
instance, there are no reserved words: all user-defined identifiers
must be prefixed with
Files are compiled as OCaml modules, and may import values from OCaml
Pervasives.print_string in the example above) and export
values to OCaml (using the
export form). Modules written in
malfunction may be combined with an
mli file written in OCaml.
Malfunction makes no effort to check types. Typical programs do go
wrong. Compilers targeting Malfunction need to convince themselves
that their output won't go wrong, but don't need to explain
with-test & < "2.0.0~"
>= "4.04" & < "4.09.0"