Building on ocaml/ocaml trunk broken after upstream signal changes #11638
Description
Expected Behavior
dune builds with ocaml/ocaml trunk
Actual Behavior
dune fails to build with ocaml/ocaml trunk
https://github.com/ocaml-multicore/multicoretests/actions/runs/14566902818/job/40857535173
ocamlc -output-complete-exe -w -24 -g -o .duneboot.exe -I boot -I +unix unix.cma boot/libs.ml boot/duneboot.ml
./.duneboot.exe
cd _boot && /home/runner/local/bin/ocamlopt.opt -c -g -no-alias-deps -w -49-6 -alert -unstable -I +unix -I +threads ocamlc_loc.mli
File "otherlibs/ocamlc-loc/src/ocamlc_loc.mli", line 1, characters 4-9:
Warning 53 [misplaced-attribute]: the alert attribute cannot appear in this context
cd _boot && /home/runner/local/bin/ocamlopt.opt -c -g -no-alias-deps -w -49-6 -alert -unstable -I +unix -I +threads stdune__Signal.ml
File "otherlibs/stdune/src/signal.ml", line 65, characters 11-19:
Error: This expression has type int
This is not a function; it cannot be applied.
make: *** [Makefile:32: _boot/dune.exe] Error 2
Error: Process completed with exit code 2.
The problem is that ocaml/ocaml#13843 added a definition for sigwinch:
val sigwinch : signalwhich causes this (previous work-around) line to fail type checking:
dune/otherlibs/stdune/src/signal.ml
Line 65 in 0764b1a
Reproduction
- install an ocaml/ocaml trunk compiler
make release && make install
- Version of
dune(output ofdune --version): 3.18.0 - Version of
ocaml(output ofocamlc --version): ocaml/ocaml trunk built from commit 765fcdb83a487ddbd4bcdd92cc47823dd79f700b - Operating system (distribution and version): all (Linux/macOS/Cygwin/MinGW/MSVC)