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Fix IEx.__break__!/3 fallback clause arity #15595

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Merged
josevalim merged 1 commit into from
Jul 12, 2026
+7 −1
Merged

Fix IEx.__break__!/3 fallback clause arity #15595

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2 changes: 1 addition & 1 deletion lib/iex/lib/iex.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -785,7 +785,7 @@ defmodule IEx do
__break__!(ast, module, fun, args, guards, stops, env)
end

def __break__!(ast, _stops) do
def __break__!(ast, _stops, _env) do
raise_unknown_break_ast!(ast)
end

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6 changes: 6 additions & 0 deletions lib/iex/test/iex/helpers_test.exs
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Expand Up @@ -102,6 +102,12 @@ defmodule IEx.HelpersTest do
fn -> break!(PryExampleModule, :unknown, 2) end
end

test "errors when setting up a break for unknown expression" do
assert_raise ArgumentError, ~r"unknown expression to break on", fn ->
break!(123)
end
end

test "errors for non-Elixir modules" do
assert_raise RuntimeError,
"could not set breakpoint, module :maps was not written in Elixir",
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