ubuntu-22.04-5.3_opam-2.3

2025-04-19 10:14.04: New job: test patricoferris/ppxlib https://github.com/patricoferris/ppxlib.git#refs/heads/ci (dd2e536f5c4aa7758d5e8c2af6f8c86901b46205) (linux-x86_64:ubuntu-22.04-5.3_opam-2.3)
Base: ocaml/opam:ubuntu-22.04-ocaml-5.3@sha256:dce7afadc5d43a042f12f72cf16a2b9d7739ab697c6fd6dc2fa91d4f9ee46a58
Opam project build


To reproduce locally:


git clone --recursive "https://github.com/patricoferris/ppxlib.git" -b "ci" && cd "ppxlib" && git reset --hard dd2e536f
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:ubuntu-22.04-ocaml-5.3@sha256:dce7afadc5d43a042f12f72cf16a2b9d7739ab697c6fd6dc2fa91d4f9ee46a58
# ubuntu-22.04-5.3_opam-2.3
USER 1000:1000
ENV CLICOLOR_FORCE="1"
ENV OPAMCOLOR="always"
WORKDIR /src
RUN sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam
RUN opam init --reinit -ni
RUN uname -rs && opam exec -- ocaml -version && opam --version
WORKDIR /src
RUN sudo chown opam /src
RUN cd ~/opam-repository && (git cat-file -e 442eddb8a363418dcb02e519972818da08bb7cd4 || git fetch origin master) && git reset -q --hard 442eddb8a363418dcb02e519972818da08bb7cd4 && git log --no-decorate -n1 --oneline && opam update -u
COPY --chown=1000:1000 ppxlib.opam ppxlib-tools.opam ppxlib-bench.opam ./
RUN opam pin add -yn ppxlib.dev './' && \
opam pin add -yn ppxlib-tools.dev './' && \
opam pin add -yn ppxlib-bench.dev './'
RUN echo '(lang dune 3.0)' > './dune-project'
ENV DEPS="base.v0.17.1 base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base cinaps.v0.15.1 cmdliner.1.3.0 csexp.1.5.2 dune.3.18.1 dune-configurator.3.18.1 ocaml.5.3.0 ocaml-base-compiler.5.3.0 ocaml-compiler.5.3.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml_intrinsics_kernel.v0.17.1 ocamlfind.1.9.8 ppx_derivers.1.2.1 re.1.12.0 seq.base sexplib0.v0.17.0 stdlib-shims.0.3.0 yojson.2.2.2"
ENV CI="true"
ENV OCAMLCI="true"
RUN opam update --depexts && opam install --cli=2.3 --depext-only -y ppxlib.dev ppxlib-tools.dev ppxlib-bench.dev $DEPS
RUN opam install $DEPS
COPY --chown=1000:1000 . /src
RUN opam exec -- dune build @install @check @runtest && rm -rf _build


END-OF-DOCKERFILE
docker build .
END-REPRO-BLOCK


2025-04-19 10:14.04: Using cache hint "patricoferris/ppxlib-ocaml/opam:ubuntu-22.04-ocaml-5.3@sha256:dce7afadc5d43a042f12f72cf16a2b9d7739ab697c6fd6dc2fa91d4f9ee46a58-ubuntu-22.04-5.3_opam-2.3-3c965630631cd47442dbfd9233049ef4"
2025-04-19 10:14.04: Using OBuilder spec:
((from ocaml/opam:ubuntu-22.04-ocaml-5.3@sha256:dce7afadc5d43a042f12f72cf16a2b9d7739ab697c6fd6dc2fa91d4f9ee46a58)
(comment ubuntu-22.04-5.3_opam-2.3)
(user (uid 1000) (gid 1000))
(env CLICOLOR_FORCE 1)
(env OPAMCOLOR always)
(workdir /src)
(run (shell "sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam"))
(run (shell "opam init --reinit -ni"))
(run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
(workdir /src)
(run (shell "sudo chown opam /src"))
(run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e 442eddb8a363418dcb02e519972818da08bb7cd4 || git fetch origin master) && git reset -q --hard 442eddb8a363418dcb02e519972818da08bb7cd4 && git log --no-decorate -n1 --oneline && opam update -u"))
(copy (src ppxlib.opam ppxlib-tools.opam ppxlib-bench.opam) (dst ./))
(run (network host)
(shell  "opam pin add -yn ppxlib.dev './' && \
\nopam pin add -yn ppxlib-tools.dev './' && \
\nopam pin add -yn ppxlib-bench.dev './'"))
(run (network host)
(shell "echo '(lang dune 3.0)' > './dune-project'"))
(env DEPS "base.v0.17.1 base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base cinaps.v0.15.1 cmdliner.1.3.0 csexp.1.5.2 dune.3.18.1 dune-configurator.3.18.1 ocaml.5.3.0 ocaml-base-compiler.5.3.0 ocaml-compiler.5.3.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml_intrinsics_kernel.v0.17.1 ocamlfind.1.9.8 ppx_derivers.1.2.1 re.1.12.0 seq.base sexplib0.v0.17.0 stdlib-shims.0.3.0 yojson.2.2.2")
(env CI true)
(env OCAMLCI true)
(run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam update --depexts && opam install --cli=2.3 --depext-only -y ppxlib.dev ppxlib-tools.dev ppxlib-bench.dev $DEPS"))
(run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam install $DEPS"))
(copy (src .) (dst /src))
(run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
)


2025-04-19 10:14.04: Waiting for resource in pool OCluster
2025-04-19 10:14.05: Waiting for worker…
2025-04-19 10:14.05: Got resource from pool OCluster
Building on asteria.caelum.ci.dev
All commits already cached
HEAD is now at dd2e536 Support OCaml 5.4


(from ocaml/opam:ubuntu-22.04-ocaml-5.3@sha256:dce7afadc5d43a042f12f72cf16a2b9d7739ab697c6fd6dc2fa91d4f9ee46a58)
2025-04-19 10:14.06 ---> using "1ca8dbe3767a63d00b9c4e4dfd4eee6c1411dab888d4f8fe81fa53f9fb2724c4" from cache


/: (comment ubuntu-22.04-5.3_opam-2.3)


/: (user (uid 1000) (gid 1000))


/: (env CLICOLOR_FORCE 1)


/: (env OPAMCOLOR always)


/: (workdir /src)


/src: (run (shell "sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam"))
2025-04-19 10:14.06 ---> using "d0e1df7202580ac7f4626ea21f2a5eaf770caee6ebd84a2158eac31c45a39b14" from cache


/src: (run (shell "opam init --reinit -ni"))
Configuring from /home/opam/.opamrc and then from built-in defaults.
Checking for available remotes: rsync and local, git.
- you won't be able to use mercurial repositories unless you install the hg command on your system.
- you won't be able to use darcs repositories unless you install the darcs command on your system.


This development version of opam requires an update to the layout of /home/opam/.opam from version 2.0 to version 2.2, which can't be reverted.
You may want to back it up before going further.


Continue? [y/n] y
Format upgrade done.


<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2025-04-19 10:14.06 ---> using "b95328df856eb65cec510ef713ff95f30ab0a7e466de13696a5a67f4d85d4db4" from cache


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 5.15.0-134-generic
The OCaml toplevel, version 5.3.0
2.3.0
2025-04-19 10:14.06 ---> using "189366a20b38aa0b2811e447ec65fc9d7d13e04df688dc7f7eaf566c34f663be" from cache


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2025-04-19 10:14.06 ---> using "51ab9a6dc3795b6f67f30c7ab97d27a6df5c56118b25db4dbc445902d521572b" from cache


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e 442eddb8a363418dcb02e519972818da08bb7cd4 || git fetch origin master) && git reset -q --hard 442eddb8a363418dcb02e519972818da08bb7cd4 && git log --no-decorate -n1 --oneline && opam update -u"))
From https://github.com/ocaml/opam-repository
* branch                  master     -> FETCH_HEAD
da74d7829f..999bff3ed8  master     -> origin/master
442eddb8a3 Merge pull request #27761 from maiste/release-dune-3.18.1


<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>
[default] synchronised from git+file:///home/opam/opam-repository


Everything as up-to-date as possible (run with --verbose to show unavailable upgrades).
However, you may "opam upgrade" these packages explicitly, which will ask permission to downgrade or uninstall the conflicting packages.
Nothing to do.
# To update the current shell environment, run: eval $(opam env)
2025-04-19 10:14.06 ---> using "b47ac51fd53b8cfe54262b849de6c5ad1b2f536f8d5ed4559379b6291ba2fbd6" from cache


/src: (copy (src ppxlib.opam ppxlib-tools.opam ppxlib-bench.opam) (dst ./))
2025-04-19 10:14.06 ---> saved as "fc2ba4f32808b5358ab7fdb266b6db87736948e469c87af445249c35dc1fffde"


/src: (run (network host)
(shell  "opam pin add -yn ppxlib.dev './' && \
\nopam pin add -yn ppxlib-tools.dev './' && \
\nopam pin add -yn ppxlib-bench.dev './'"))
[ppxlib.dev] synchronised (file:///src)
ppxlib is now pinned to file:///src (version dev)
[ppxlib-tools.dev] synchronised (file:///src)
ppxlib-tools is now pinned to file:///src (version dev)
Package ppxlib-bench does not exist, create as a NEW package? [y/n] y
[ppxlib-bench.dev] synchronised (file:///src)
ppxlib-bench is now pinned to file:///src (version dev)
2025-04-19 10:14.11 ---> saved as "9f8edfbc7abfe9ca852f2362b6c8641315e5ab9e9d8663b9edcf3ccbb7cc6750"


/src: (run (network host)
(shell "echo '(lang dune 3.0)' > './dune-project'"))
2025-04-19 10:14.11 ---> saved as "ef5a298b3162be922fefecd4d6afc03dfd5783151cde67ac79fdb9aec7f30920"


/src: (env DEPS "base.v0.17.1 base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base cinaps.v0.15.1 cmdliner.1.3.0 csexp.1.5.2 dune.3.18.1 dune-configurator.3.18.1 ocaml.5.3.0 ocaml-base-compiler.5.3.0 ocaml-compiler.5.3.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml_intrinsics_kernel.v0.17.1 ocamlfind.1.9.8 ppx_derivers.1.2.1 re.1.12.0 seq.base sexplib0.v0.17.0 stdlib-shims.0.3.0 yojson.2.2.2")


/src: (env CI true)


/src: (env OCAMLCI true)


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam update --depexts && opam install --cli=2.3 --depext-only -y ppxlib.dev ppxlib-tools.dev ppxlib-bench.dev $DEPS"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://archive.ubuntu.com/ubuntu jammy InRelease
- Get:2 http://archive.ubuntu.com/ubuntu jammy-updates InRelease [128 kB]
- Get:3 http://archive.ubuntu.com/ubuntu jammy-backports InRelease [127 kB]
- Get:4 http://security.ubuntu.com/ubuntu jammy-security InRelease [129 kB]
- Get:5 http://archive.ubuntu.com/ubuntu jammy-updates/universe amd64 Packages [1542 kB]
- Get:6 http://archive.ubuntu.com/ubuntu jammy-updates/restricted amd64 Packages [4246 kB]
- Get:7 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages [3140 kB]
- Get:8 http://archive.ubuntu.com/ubuntu jammy-backports/universe amd64 Packages [35.2 kB]
- Get:9 http://security.ubuntu.com/ubuntu jammy-security/restricted amd64 Packages [4000 kB]
- Get:10 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages [2788 kB]
- Get:11 http://security.ubuntu.com/ubuntu jammy-security/universe amd64 Packages [1243 kB]
- Fetched 17.4 MB in 1s (16.0 MB/s)
- Reading package lists...
- 


<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>
[ppxlib.dev] synchronised (file:///src)
[ppxlib-bench.dev] synchronised (file:///src)
[ppxlib-tools.dev] synchronised (file:///src)


[NOTE] Package ocaml-options-vanilla is already installed (current version is 1).
[NOTE] Package ocaml-config is already installed (current version is 3).
[NOTE] Package ocaml-compiler is already installed (current version is 5.3.0).
[NOTE] Package ocaml-base-compiler is already installed (current version is 5.3.0).
[NOTE] Package ocaml is already installed (current version is 5.3.0).
[NOTE] Package base-unix is already installed (current version is base).
[NOTE] Package base-threads is already installed (current version is base).
[NOTE] Package base-nnp is already installed (current version is base).
[NOTE] Package base-effects is already installed (current version is base).
[NOTE] Package base-domains is already installed (current version is base).
[NOTE] Package base-bigarray is already installed (current version is base).
2025-04-19 10:14.24 ---> saved as "cb74717fac5d0733d375f058f6ccfd2d8da85f52d4b22b02f1a4ded7e8d58e49"


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam install $DEPS"))
[NOTE] Package ocaml-options-vanilla is already installed (current version is 1).
[NOTE] Package ocaml-config is already installed (current version is 3).
[NOTE] Package ocaml-compiler is already installed (current version is 5.3.0).
[NOTE] Package ocaml-base-compiler is already installed (current version is 5.3.0).
[NOTE] Package ocaml is already installed (current version is 5.3.0).
[NOTE] Package base-unix is already installed (current version is base).
[NOTE] Package base-threads is already installed (current version is base).
[NOTE] Package base-nnp is already installed (current version is base).
[NOTE] Package base-effects is already installed (current version is base).
[NOTE] Package base-domains is already installed (current version is base).
[NOTE] Package base-bigarray is already installed (current version is base).
The following actions will be performed:
=== install 15 packages
- install base                    v0.17.1
- install cinaps                  v0.15.1
- install cmdliner                1.3.0
- install csexp                   1.5.2
- install dune                    3.18.1
- install dune-configurator       3.18.1
- install ocaml-compiler-libs     v0.17.0
- install ocaml_intrinsics_kernel v0.17.1
- install ocamlfind               1.9.8
- install ppx_derivers            1.2.1
- install re                      1.12.0
- install seq                     base
- install sexplib0                v0.17.0
- install stdlib-shims            0.3.0
- install yojson                  2.2.2


<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved cinaps.v0.15.1  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved base.v0.17.1  (cached)
-> retrieved cmdliner.1.3.0  (cached)
-> retrieved ocaml-compiler-libs.v0.17.0  (cached)
-> retrieved ocaml_intrinsics_kernel.v0.17.1  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved ppx_derivers.1.2.1  (cached)
-> retrieved seq.base  (cached)
-> installed seq.base
-> retrieved re.1.12.0  (cached)
-> retrieved sexplib0.v0.17.0  (cached)
-> retrieved stdlib-shims.0.3.0  (cached)
-> retrieved yojson.2.2.2  (cached)
-> retrieved dune.3.18.1, dune-configurator.3.18.1  (cached)
-> installed cmdliner.1.3.0
-> installed ocamlfind.1.9.8
-> installed dune.3.18.1
-> installed ppx_derivers.1.2.1
-> installed csexp.1.5.2
-> installed ocaml-compiler-libs.v0.17.0
-> installed ocaml_intrinsics_kernel.v0.17.1
-> installed re.1.12.0
-> installed sexplib0.v0.17.0
-> installed stdlib-shims.0.3.0
-> installed yojson.2.2.2
-> installed cinaps.v0.15.1
-> installed dune-configurator.3.18.1
-> installed base.v0.17.1
Done.
# To update the current shell environment, run: eval $(opam env)
2025-04-19 10:15.04 ---> saved as "0835b054d798ecfc23ba5f7ac0c4506fe091516d050c75e8fe5ae1d9d4909009"


/src: (copy (src .) (dst /src))
2025-04-19 10:15.04 ---> saved as "cc08aeac743e22c6886a3fbf07fd1522df5b3ac4025fd32cc804b8d3f29670a9"


/src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
File "test/driver/stdin_input/test.t/run.t", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/.sandbox/b40e27c789acb3842f5e75fd9a001599/default/test/driver/stdin_input/test.t/run.t _build/.sandbox/b40e27c789acb3842f5e75fd9a001599/default/test/driver/stdin_input/test.t/run.t.corrected
diff --git a/_build/.sandbox/b40e27c789acb3842f5e75fd9a001599/default/test/driver/stdin_input/test.t/run.t b/_build/.sandbox/b40e27c789acb3842f5e75fd9a001599/default/test/driver/stdin_input/test.t/run.t.corrected
index d385654..7bc5379 100644
--- a/_build/.sandbox/b40e27c789acb3842f5e75fd9a001599/default/test/driver/stdin_input/test.t/run.t
+++ b/_build/.sandbox/b40e27c789acb3842f5e75fd9a001599/default/test/driver/stdin_input/test.t/run.t.corrected
@@ -17,4 +17,5 @@ We generate a binary AST file...
... and ensure the driver can also read it from stdin


$ cat binary_ast | ../identity_driver.exe -impl -
-  let b = 2
+  Segmentation fault
+  [139]
File "test/driver/source-quotation-in-errors/run.t", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/.sandbox/81737eacc7976ca874c099e83616925c/default/test/driver/source-quotation-in-errors/run.t _build/.sandbox/81737eacc7976ca874c099e83616925c/default/test/driver/source-quotation-in-errors/run.t.corrected
diff --git a/_build/.sandbox/81737eacc7976ca874c099e83616925c/default/test/driver/source-quotation-in-errors/run.t b/_build/.sandbox/81737eacc7976ca874c099e83616925c/default/test/driver/source-quotation-in-errors/run.t.corrected
index e644f3f..18283e2 100644
--- a/_build/.sandbox/81737eacc7976ca874c099e83616925c/default/test/driver/source-quotation-in-errors/run.t
+++ b/_build/.sandbox/81737eacc7976ca874c099e83616925c/default/test/driver/source-quotation-in-errors/run.t.corrected
@@ -38,8 +38,5 @@ We then call our raising driver on the binary AST, it should be able to report t
error with source quotation:


$ ./raising_driver.exe -impl file.pp.ml
-  File "file.ml", line 1, characters 8-16:
-  1 | let x = [%raise]
-              ^^^^^^^^
-  Error: An exception, raise be!
-  [1]
+  Segmentation fault
+  [139]
File "test/driver/error_embedding/test.t/run.t", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/.sandbox/f5523acd89b31716208c76818172d198/default/test/driver/error_embedding/test.t/run.t _build/.sandbox/f5523acd89b31716208c76818172d198/default/test/driver/error_embedding/test.t/run.t.corrected
diff --git a/_build/.sandbox/f5523acd89b31716208c76818172d198/default/test/driver/error_embedding/test.t/run.t b/_build/.sandbox/f5523acd89b31716208c76818172d198/default/test/driver/error_embedding/test.t/run.t.corrected
index dafee10..80829aa 100644
--- a/_build/.sandbox/f5523acd89b31716208c76818172d198/default/test/driver/error_embedding/test.t/run.t
+++ b/_build/.sandbox/f5523acd89b31716208c76818172d198/default/test/driver/error_embedding/test.t/run.t.corrected
@@ -14,8 +14,11 @@ The same is true when using the `-as-ppx` mode (note that the error is reported
by ocaml itself)


$ ocaml -ppx '../raiser.exe -as-ppx' impl.ml
-  File "./impl.ml", line 1, characters 8-16:
-  Error: Raising inside the rewriter
+  Segmentation fault
+  File "./impl.ml", line 1:
+  Error: Error while running external preprocessor
+  Command line: ../raiser.exe -as-ppx '/tmp/build_c78519_dune/camlppxfcfa85' '/tmp/build_c78519_dune/camlppxe48c1a'
+  
[2]


Also exceptions raised in a preprocessor get embedded into an AST(while the
File "test/driver/standalone_run_as_ppx/run.t", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/.sandbox/44bc46b2b6923604d02305eeefed8786/default/test/driver/standalone_run_as_ppx/run.t _build/.sandbox/44bc46b2b6923604d02305eeefed8786/default/test/driver/standalone_run_as_ppx/run.t.corrected
diff --git a/_build/.sandbox/44bc46b2b6923604d02305eeefed8786/default/test/driver/standalone_run_as_ppx/run.t b/_build/.sandbox/44bc46b2b6923604d02305eeefed8786/default/test/driver/standalone_run_as_ppx/run.t.corrected
index e36c4bf..5026666 100644
--- a/_build/.sandbox/44bc46b2b6923604d02305eeefed8786/default/test/driver/standalone_run_as_ppx/run.t
+++ b/_build/.sandbox/44bc46b2b6923604d02305eeefed8786/default/test/driver/standalone_run_as_ppx/run.t.corrected
@@ -6,7 +6,12 @@ The rewriter gets applied when using `--as-ppx`


$ echo "let _ = [%print_hi]" > impl.ml
$ ocaml -ppx './print_stuff.exe --as-ppx' impl.ml
-  hi
+  Segmentation fault
+  File "./impl.ml", line 1:
+  Error: Error while running external preprocessor
+  Command line: ./print_stuff.exe --as-ppx '/tmp/build_c78519_dune/camlppx0ab36e' '/tmp/build_c78519_dune/camlppx72e5fa'
+  
+  [2]


If a non-compatible file gets fed, the file name is reported correctly


@@ -20,18 +25,31 @@ The ocaml.ppx.context attribute gets parsed correctly; in particular, the tool n


$ echo "let _ = [%print_tool_name]" > impl.ml
$ ocaml -ppx './print_stuff.exe --as-ppx' impl.ml
-  ocaml
+  Segmentation fault
+  File "./impl.ml", line 1:
+  Error: Error while running external preprocessor
+  Command line: ./print_stuff.exe --as-ppx '/tmp/build_c78519_dune/camlppx17440c' '/tmp/build_c78519_dune/camlppxe724c0'
+  
+  [2]


The driver's `shared_args` arguments are taken into account. For example, `-loc-filename`


$ echo "let _ = [%print_fname]" > impl.ml
$ ocaml -ppx './print_stuff.exe --as-ppx -loc-filename new_fn.ml' impl.ml
-  new_fn.ml
+  Segmentation fault
+  File "./impl.ml", line 1:
+  Error: Error while running external preprocessor
+  Command line: ./print_stuff.exe --as-ppx -loc-filename new_fn.ml '/tmp/build_c78519_dune/camlppxc6c1ca' '/tmp/build_c78519_dune/camlppx3ae621'
+  
+  [2]


or `dont-apply`


$ echo "let _ = [%print_hi]" > impl.ml
$ ocaml -ppx './print_stuff.exe --as-ppx -dont-apply test' impl.ml
-  File "./impl.ml", line 1, characters 10-18:
-  Error: Uninterpreted extension 'print_hi'.
+  Segmentation fault
+  File "./impl.ml", line 1:
+  Error: Error while running external preprocessor
+  Command line: ./print_stuff.exe --as-ppx -dont-apply test '/tmp/build_c78519_dune/camlppxcd1714' '/tmp/build_c78519_dune/camlppx03a16a'
+  
[2]
File "test/driver/flag_cookie/run.t", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/.sandbox/8048a168edec3155d787b68b8599974d/default/test/driver/flag_cookie/run.t _build/.sandbox/8048a168edec3155d787b68b8599974d/default/test/driver/flag_cookie/run.t.corrected
diff --git a/_build/.sandbox/8048a168edec3155d787b68b8599974d/default/test/driver/flag_cookie/run.t b/_build/.sandbox/8048a168edec3155d787b68b8599974d/default/test/driver/flag_cookie/run.t.corrected
index d6c3fa5..0d4cfd9 100644
--- a/_build/.sandbox/8048a168edec3155d787b68b8599974d/default/test/driver/flag_cookie/run.t
+++ b/_build/.sandbox/8048a168edec3155d787b68b8599974d/default/test/driver/flag_cookie/run.t.corrected
@@ -7,4 +7,9 @@ The cookie flag is taken into account, both by the main standalone
...and by the `-as-ppx` standalone


$ ocaml -ppx './print_cookie_driver.exe --as-ppx -cookie x=1' impl.ml
-  Value of cookie x: 1
+  Segmentation fault
+  File "./impl.ml", line 1:
+  Error: Error while running external preprocessor
+  Command line: ./print_cookie_driver.exe --as-ppx -cookie x=1 '/tmp/build_c78519_dune/camlppxc4cc3a' '/tmp/build_c78519_dune/camlppx421741'
+  
+  [2]
File "test/driver/run_as_ppx_rewriter/run.t", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/.sandbox/24a8386c5000bc13ffa58f615ce85e0a/default/test/driver/run_as_ppx_rewriter/run.t _build/.sandbox/24a8386c5000bc13ffa58f615ce85e0a/default/test/driver/run_as_ppx_rewriter/run.t.corrected
diff --git a/_build/.sandbox/24a8386c5000bc13ffa58f615ce85e0a/default/test/driver/run_as_ppx_rewriter/run.t b/_build/.sandbox/24a8386c5000bc13ffa58f615ce85e0a/default/test/driver/run_as_ppx_rewriter/run.t.corrected
index a9a0d71..c39d5be 100644
--- a/_build/.sandbox/24a8386c5000bc13ffa58f615ce85e0a/default/test/driver/run_as_ppx_rewriter/run.t
+++ b/_build/.sandbox/24a8386c5000bc13ffa58f615ce85e0a/default/test/driver/run_as_ppx_rewriter/run.t.corrected
@@ -10,23 +10,32 @@ The registered rewriters get applied when using `run_as_ppx_rewriter` as entry p
> let () = [%print_bye]
> EOF
$ ocaml -ppx './print_greetings.exe' file.ml
-  hi
-  bye
+  Segmentation fault
+  File "./file.ml", line 1:
+  Error: Error while running external preprocessor
+  Command line: ./print_greetings.exe '/tmp/build_c78519_dune/camlppxe29d5c' '/tmp/build_c78519_dune/camlppx16f629'
+  
+  [2]


The driver's `shared_args` are taken into account, such as `-apply`...


$ ocaml -ppx './print_greetings.exe -apply print_hi' file.ml
-  hi
-  File "./file.ml", line 2, characters 11-20:
-  Error: Uninterpreted extension 'print_bye'.
+  Segmentation fault
+  File "./file.ml", line 1:
+  Error: Error while running external preprocessor
+  Command line: ./print_greetings.exe -apply print_hi '/tmp/build_c78519_dune/camlppx336e12' '/tmp/build_c78519_dune/camlppx7fe011'
+  
[2]


... and `-check`


$ echo "[@@@attr non_registered_attr]" > attribute_file.ml
$ ocaml -ppx './print_greetings.exe -check' attribute_file.ml
-  File "./attribute_file.ml", line 1, characters 4-8:
-  Error: Attribute `attr' was not used
+  Segmentation fault
+  File "./attribute_file.ml", line 1:
+  Error: Error while running external preprocessor
+  Command line: ./print_greetings.exe -check '/tmp/build_c78519_dune/camlppx7e109e' '/tmp/build_c78519_dune/camlppx3dec54'
+  
[2]


"/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 1
2025-04-19 10:15.22: Job failed: Failed: Build failed