benwilson512
Help with Dialyzer and nowarn_function
Hey folks!
I’ve got a branch in Absinthe that conditionally uses the :persisten_term module if it’s available. Unfortunately this is causing me issues with dialyzer, for reasons I can’t quite sort out. I’d like to do one of two things:
- Figure out why dialyzer things
:persistent_term.put/2is unavailable on OTP 21.2. This would be the best option. - If that fails, mark the function as
nowarn. I’ve tried this, but I can’t seem to get the invocation correct.
Branch: Persistent Term Backend by benwilson512 · Pull Request #895 · absinthe-graphql/absinthe · GitHub
Failing Travis job: Travis CI
Line where I try to tell dialyzer to ignore stuff: Persistent Term Backend by benwilson512 · Pull Request #895 · absinthe-graphql/absinthe · GitHub
Marked As Solved
kip
Sometime in the past, for reasons I don’t recall (but I think i was heading down the same path as you) I added the following to my .dialyzer_ignore_warnings fie which seemed to quiet things down. Hope it helps make some progress.
:0: Unknown function persistent_term:get/2
:0: Unknown function persistent_term:put/2
I think this may also have been because of the @dialyzer issue you are having - i think I had the same but can’t fully recall.
Also Liked
benwilson512
Hi @kip thanks for the suggestion. I added a file with those lines to that file and at first it didn’t work, but then switched it to using the Elixir formatted documented by dialyxir. This worked!
Commit: Persistent Term Backend by benwilson512 · Pull Request #895 · absinthe-graphql/absinthe · GitHub
Dialyxir format: GitHub - jeremyjh/dialyxir: Mix tasks to simplify use of Dialyzer in Elixir projects. · GitHub
I’d still like to sort out why dialyzer doesn’t think persistent_term.put exists for that version of Erlang though.
tristan
We’ve now hit this issue in OpenTelemetry Fix dialyzer issues by davydog187 · Pull Request #82 · open-telemetry/opentelemetry-erlang-api · GitHub
But what is extra weird is that dialyzer has been working fine, no warnings about persistent_term:put/2. It is only now that Elixir’s dialyxer task has been added that its use of dialyzer warns about the function…
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