Bug report filed: ocaml/dune#9272
This is a sample project that reproduce a regression introduced by Dune 3.11.0 that might have been caused by ocaml/dune#8361 (suggested by @emillon at a thread in #dune channel on the OCaml Discord).
The verified affected systems are MacBook Pro (Apple M1 Pro) and MacBook Air (Apple M2) with macOS 14.1.1.
It seems that the problem cannot be reproduced on MacBook Pro 15-inch, 2017 with Intel Core i7 2.9 GHz and macOS 13.6.1.
The confirmed affected versions of Dune is 3.11.0 and 3.11.1. This problem can be reproduced with OCaml 4.14.0 ~ 5.1.0 and camomile.2.0.0. The problem goes way after downgrading Dune to 3.10.0.
To reproduce the problem, run the reproduce.sh script.
On affected systems and Dune versions, it will result the
(hello.exe compiled from hello.ml) program being killed by
the OS with an exit code 137 and Bash reporting Killed: 9.
Running the compiled executable resulted under _build/default
directly will output hi there with an exit code 0
even on affected setups.