Exadra37
Why is not compilation aborted when an undefined module attribute is found?
A bug going into production without any need:
warning: undefined module attribute @seconds, please remove access to @seconds or explicitly set it before access
lib/api_baas/accounts_admins/admin_user_token.ex:120: ApiBaas.AccountsAdmins.AdminUserToken (module)
Yes, tests should caught it, but why doesn’t the compiler abort compilation when it finds this?
Yes, I know that warnings can be enabled to behave as errors, but some warnings need to behave as warnings, and not halt the compiler.
I am curious about the reason for this to be considered as an warning and not an error?
Most Liked
al2o3cr
I only have 1.13 + OTP 25 right at hand to test, but on that version I still get the same warning from plug when running mix compile --warnings-as-errors with an empty _build directory.
However, --warnings-as-errors doesn’t turn warnings in dependencies into errors.
Some historical digging reveals that it used to; around the time of Elixir 1.4 that was changed, by commits like:
https://github.com/elixir-lang/elixir/commit/bc2480d53749ffbd102898f5ead7e0948aa860ae
hst337
Exadra37
For example:
==> plug
Compiling 1 file (.erl)
Compiling 41 files (.ex)
warning: System.stacktrace/0 is deprecated. Use __STACKTRACE__ instead
lib/plug/conn/wrapper_error.ex:26: Plug.Conn.WrapperError.reraise/3
==> ecto_sqlite3
Compiling 4 files (.ex)
warning: function query_many/4 required by behaviour Ecto.Adapters.SQL.Connection is not implemented (in module Ecto.Adapters.SQLite3.Connection)
lib/ecto/adapters/sqlite3/connection.ex:1: Ecto.Adapters.SQLite3.Connection (module)
Last Post!
Exadra37
Not a solution… at best a work-around and the problem persists for non informed developers.
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