.ocamlinit

  #use "topfind";;
  #require "lwt.unix";;
  Sys.set_signal Sys.sigusr1 (Sys.Signal_handle (fun _ ->
    Printexc.get_callstack 100 |> Printexc.raw_backtrace_to_string |> prerr_endline;
    flush stderr
  ));;
  
  

gistfile1.txt

$ utop
# require "gg";;
Raised by primitive operation at unknown location
Called from unknown location
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Stdlib__List.exists in file "list.ml", line 176, characters 12-15
Called from Fl_topo.Make.let_le in file "fl_topo.ml", line 191, characters 10-32
Called from Fl_package_base.add_relations.(fun) in file "fl_package_base.ml", line 276, characters 1-37
Called from unknown location
Called from Stdlib__List.iter in file "list.ml", line 112, characters 12-15
Called from Fl_package_base.add_all_relations.(fun) in file "fl_package_base.ml", line 305, characters 2-35

Called from unknown location
Called from Stdlib__List.iter in file "list.ml", line 112, characters 12-15
Called from Fl_package_base.requires_deeply in file "fl_package_base.ml", line 389, characters 2-35
Called from UTop.require in file "src/lib/uTop.ml", line 773, characters 23-82
Called from UTop.require in file "src/lib/uTop.ml", line 776, characters 4-28
Called from Topcommon.try_run_directive in file "toplevel/topcommon.ml", line 356, characters 65-68
Called from Topeval.execute_phrase in file "toplevel/byte/topeval.ml", line 191, characters 6-42
Called from Topeval.execute_phrase in file "toplevel/byte/topeval.ml", lines 193-194, characters 4-13
Called from UTop_main.execute_phrase in file "src/lib/uTop_main.ml", line 683, characters 12-47
Called from UTop_main.loop in file "src/lib/uTop_main.ml", line 767, characters 18-49
Called from UTop_main.loop in file "src/lib/uTop_main.ml", lines 786-795, characters 11-46
Called from UTop_main.main_aux in file "src/lib/uTop_main.ml", line 1475, characters 8-17
Called from unknown location
Called from UTop_main.main_internal in file "src/lib/uTop_main.ml", line 1490, characters 4-25
Called from UTop_main.main_internal in file "src/lib/uTop_main.ml", lines 1492-1504, characters 4-10
Called from Dune__exe__Utop in file "src/top/utop.ml", line 10, characters 9-26

gistfile2.txt

kill -s USR1 $(pgrep utop)