crash on 1.0.0-rc 7

[paulswartz]

Precheck

• Take a look at the open issues and be sure that your issue is not already covered.
• Be sure your versions of Dialyxir and Erlex are up to date.

Environment

• Elixir & Erlang/OTP versions (elixir --version):

Erlang/OTP 21 [erts-10.3.5.4] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [hipe]
Elixir 1.9.1 (compiled with Erlang/OTP 21)

• Which version of Dialyxir are you using? (cat mix.lock | grep dialyxir):

  "dialyxir": {:hex, :dialyxir, "1.0.0-rc.7", "6287f8f2cb45df8584317a4be1075b8c9b8a69de8eeb82b4d9e6c761cf2664cd", [:mix], [{:erlex, ">= 0.2.5", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm"}

Current behavior

I get a crash running mix dialyzer after updating to RC7.

Finding suitable PLTs
Checking PLT...
[:asn1, :bunt, :compiler, :cowboy, :cowlib, :credo, :crypto, :dialyxir, :eex, :elixir, :erlex, :jason, :kernel, :logger, :logster, :mime, :phoenix,
 :phoenix_pubsub, :plug, :plug_cowboy, :plug_crypto, :public_key, :ranch, :runtime_tools, :snmp, :ssh, :ssl, :stdlib, :telemetry]
Looking up modules in dialyxir_erlang-21.3.8.5_elixir-1.9.1_deps-dev.plt
Finding applications for dialyxir_erlang-21.3.8.5_elixir-1.9.1_deps-dev.plt
Finding modules for dialyxir_erlang-21.3.8.5_elixir-1.9.1_deps-dev.plt
Removing 1 modules from dialyxir_erlang-21.3.8.5_elixir-1.9.1_deps-dev.pltChecking 1193 modules in dialyxir_erlang-21.3.8.5_elixir-1.9.1_deps-dev.plt
Adding 3 modules to dialyxir_erlang-21.3.8.5_elixir-1.9.1_deps-dev.plt
done in 0m4.94s
No :ignore_warnings opt specified in mix.exs and default does not exist.

** (UndefinedFunctionError) function Dialyxir.Project.dialyzer_paths/0 is undefined or private. Did you mean one of:

      * dialyzer_files/0
      * dialyzer_flags/0

    Dialyxir.Project.dialyzer_paths()
    lib/mix/tasks/dialyzer.ex:255: Mix.Tasks.Dialyzer.run_dialyzer/2
    lib/mix/tasks/dialyzer.ex:195: Mix.Tasks.Dialyzer.run/1    (mix) lib/mix/task.ex:331: Mix.Task.run_task/3
    (mix) lib/mix/cli.ex:79: Mix.CLI.run_task/2

Expected behavior

Going back to RC6, everything is fine.

[paulswartz]

I was also able to address it by deleting my deps and _build directory: maybe something needs to be marked as needing a re-compilation?

[jeremyjh]

Are you able to reproduce this? Also any chance you had previously installed Dialyxir as a mix archive?

[aboroska]

Previously my project was on 0.5.1. When upgraded to 1.0.0-rc7 I got the same crash. Deleting deps solved the issue, so seems to be some re-compile problem as suggested by @paulswartz.
(FYI I didn't install Dialyxir as a mix archive)

[paulswartz]

I did not install it as an archive. Since upgrading I haven't seen the issue again, so it seems to only happen when updating the library.

[asummers]

Out of curiosity, do either of you specify the PLT location in your mix.exs file?

[paulswartz]

I'm able to reproduce with the following steps:

• mix new dialyzer_test
• add {:dialyxir, "~> 0.5"} to mix.exs
• mix deps.get
• mix dialyzer
• update dialyxir version to 1.0.0-rc.7
• mix deps.get
• mix dialyzer
• 💥

[jeremyjh]

I'd like to fix this, or at least have an adequate understanding and explanation of it before releasing 1.0. A lot of new users are still starting on 0.5 since that is what you land on by default in hex.