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Cryptic error when invalid :limit given in IO.inspect #6142

eksperimental opened this Issue May 24, 2017 · 2 comments


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eksperimental commented May 24, 2017

Look at the misspelling in the :limit value

iex(8)> IO.inspect([a: 1, b: 2], limit: :infitiny)
** (ArithmeticError) bad argument in arithmetic expression
    (elixir) lib/inspect/algebra.ex:596: Inspect.Algebra.decrement/1
    (elixir) lib/inspect/algebra.ex:578: Inspect.Algebra.do_surround_many/5
    (elixir) lib/inspect/algebra.ex:562: Inspect.Algebra.do_surround_many/7
    (elixir) lib/io.ex:293: IO.inspect/3

It's impossible to know what's wrong with that Error message.

I was looking at a solution, but it seems that we should be validating Inspect.Opts, just wanted to look for some guidance before investing energy on this.


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josevalim commented May 24, 2017

Let's attempt to improve this on the Erlang side: erlang/otp#1478

@josevalim josevalim closed this May 24, 2017


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eksperimental commented May 26, 2017

@josevalim it's great to see that issues discovered in Elixir make their way into Erlang.

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