From 3f5f0fc0f529d0db9c5813814a36b4af173e1dc8 Mon Sep 17 00:00:00 2001
From: Matt Enlow <matt@novaugust.net>
Date: Tue, 30 Dec 2025 12:34:02 -0700
Subject: [PATCH] count_until: ensure is_integer when raising argument error

---
 lib/elixir/lib/enum.ex | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/elixir/lib/enum.ex b/lib/elixir/lib/enum.ex
index eeb2578776..56bcfb4f39 100644
--- a/lib/elixir/lib/enum.ex
+++ b/lib/elixir/lib/enum.ex
@@ -780,7 +780,7 @@ defmodule Enum do
     end
   end
 
-  def count_until(_enumerable, limit) do
+  def count_until(_enumerable, limit) when is_integer(limit) do
     raise ArgumentError, "expected limit to be greater than 0, got: #{limit}"
   end
 
@@ -805,7 +805,7 @@ defmodule Enum do
     end
   end
 
-  def count_until(_enumerable, _fun, limit) do
+  def count_until(_enumerable, _fun, limit) when is_integer(limit) do
     raise ArgumentError, "expected limit to be greater than 0, got: #{limit}"
   end