I can't seem to get traces to work correctly, the trace is incomplete does not show the module that generated an exception, first I was generating a normal exception than I was told I needed to Lwt.wrap it, still have the same behaviour, this is the backtrace I get:
Fatal error: exception Failure("boom")
Raised at file "src/core/lwt.ml", line 788, characters 22-23
Called from file "src/unix/lwt_main.ml", line 34, characters 8-18
No line for the Boom.crash() call.
Called from file "exc.ml", line 13, characters 2-26 (This is the Lwt_main.run)
On my original case I don't even get the bottom line, my trace starts at lwt_main.ml line 34.
open Lwt
let () = Printexc.record_backtrace true
let rec thread () =
lwt () = Lwt_unix.sleep 1.0 in
lwt () = wrap (fun () -> Boom.crash ()) in
thread ()
let _ =
Lwt_main.run (thread ())
let crash () = failwith "boom"
### Starting build.
# Target: exc.ml.depends, tags: { bin_annot, debug, extension:ml, file:exc.ml, ocaml, ocamldep, package(lwt.syntax), package(lwt.unix), ppopt(-lwt-debug), quiet, strict_sequence, syntax(camlp4o), traverse }
ocamlfind ocamldep -package lwt.unix -package lwt.syntax -ppopt -lwt-debug -syntax camlp4o -modules exc.ml > exc.ml.depends
# Target: boom.ml.depends, tags: { bin_annot, debug, extension:ml, file:boom.ml, ocaml, ocamldep, package(lwt.syntax), package(lwt.unix), ppopt(-lwt-debug), quiet, strict_sequence, syntax(camlp4o), traverse }
ocamlfind ocamldep -package lwt.unix -package lwt.syntax -ppopt -lwt-debug -syntax camlp4o -modules boom.ml > boom.ml.depends # cached
# Target: boom.cmo, tags: { bin_annot, byte, compile, debug, extension:cmo, extension:ml, file:boom.cmo, file:boom.ml, implem, ocaml, package(lwt.syntax), package(lwt.unix), ppopt(-lwt-debug), quiet, strict_sequence, syntax(camlp4o), traverse }
ocamlfind ocamlc -c -g -bin-annot -strict-sequence -package lwt.unix -package lwt.syntax -ppopt -lwt-debug -syntax camlp4o -o boom.cmo boom.ml # cached
# Target: exc.cmo, tags: { bin_annot, byte, compile, debug, extension:cmo, extension:ml, file:exc.cmo, file:exc.ml, implem, ocaml, package(lwt.syntax), package(lwt.unix), ppopt(-lwt-debug), quiet, strict_sequence, syntax(camlp4o), traverse }
ocamlfind ocamlc -c -g -bin-annot -strict-sequence -package lwt.unix -package lwt.syntax -ppopt -lwt-debug -syntax camlp4o -o exc.cmo exc.ml
# Target: boom.cmx, tags: { bin_annot, compile, debug, extension:cmx, extension:ml, file:boom.cmx, file:boom.ml, implem, native, ocaml, package(lwt.syntax), package(lwt.unix), ppopt(-lwt-debug), quiet, strict_sequence, syntax(camlp4o), traverse }
ocamlfind ocamlopt -c -g -bin-annot -strict-sequence -package lwt.unix -package lwt.syntax -ppopt -lwt-debug -syntax camlp4o -o boom.cmx boom.ml # cached
# Target: exc.cmx, tags: { bin_annot, compile, debug, extension:cmx, extension:ml, file:exc.cmx, file:exc.ml, implem, native, ocaml, package(lwt.syntax), package(lwt.unix), ppopt(-lwt-debug), quiet, strict_sequence, syntax(camlp4o), traverse }
ocamlfind ocamlopt -c -g -bin-annot -strict-sequence -package lwt.unix -package lwt.syntax -ppopt -lwt-debug -syntax camlp4o -o exc.cmx exc.ml
# Target: exc.native, tags: { bin_annot, debug, dont_link_with, extension:native, file:exc.native, link, native, ocaml, package(lwt.syntax), package(lwt.unix), ppopt(-lwt-debug), program, quiet, strict_sequence, syntax(camlp4o), traverse }
ocamlfind ocamlopt -linkpkg -g -package lwt.unix -package lwt.syntax -syntax camlp4o boom.cmx exc.cmx -o exc.native
# Compilation successful.
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