From 7acbe82c27c56b76a0ac108410fc0124aa50b7d1 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Sat, 3 Oct 2026 05:47:52 -0500
Subject: [PATCH] Also guard the NumberRange size so an added field fails the
 build

---
 esphome/components/number/number_traits.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/esphome/components/number/number_traits.h b/esphome/components/number/number_traits.h
index ff6f5f4aa9d..6501bb2e20b 100644
--- a/esphome/components/number/number_traits.h
+++ b/esphome/components/number/number_traits.h
@@ -22,6 +22,7 @@ struct NumberRange {
 static_assert(std::is_same_v<decltype(NumberRange::min_value), float>, "NumberRange fields must stay float");
 static_assert(std::is_same_v<decltype(NumberRange::max_value), float>, "NumberRange fields must stay float");
 static_assert(std::is_same_v<decltype(NumberRange::step), float>, "NumberRange fields must stay float");
+static_assert(sizeof(NumberRange) == 3 * sizeof(float), "NumberRange is read from flash with word loads");
 
 class NumberTraits {
  public: