From 6d1ee107426a38206e118a6818d1d937524f9725 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Wed, 22 Oct 2025 12:24:47 -1000
Subject: [PATCH] manual copy

---
 esphome/components/copy/fan/copy_fan.cpp | 12 +++++++++++-
 esphome/components/copy/fan/copy_fan.h   |  2 ++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/esphome/components/copy/fan/copy_fan.cpp b/esphome/components/copy/fan/copy_fan.cpp
index cf5341531a..b939338b24 100644
--- a/esphome/components/copy/fan/copy_fan.cpp
+++ b/esphome/components/copy/fan/copy_fan.cpp
@@ -35,7 +35,17 @@ fan::FanTraits CopyFan::get_traits() {
   traits.set_speed(base.supports_speed());
   traits.set_supported_speed_count(base.supported_speed_count());
   traits.set_direction(base.supports_direction());
-  traits.set_supported_preset_modes(&base.supported_preset_modes());
+
+  // Copy preset modes from source to avoid dangling pointer to temporary
+  if (base.supports_preset_modes()) {
+    const auto &source_modes = base.supported_preset_modes();
+    this->preset_modes_.clear();
+    for (const auto &mode : source_modes) {
+      this->preset_modes_.push_back(mode);
+    }
+    traits.set_supported_preset_modes(&this->preset_modes_);
+  }
+
   return traits;
 }
 
diff --git a/esphome/components/copy/fan/copy_fan.h b/esphome/components/copy/fan/copy_fan.h
index b474975bc4..78134c6890 100644
--- a/esphome/components/copy/fan/copy_fan.h
+++ b/esphome/components/copy/fan/copy_fan.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "esphome/core/component.h"
+#include "esphome/core/helpers.h"
 #include "esphome/components/fan/fan.h"
 
 namespace esphome {
@@ -19,6 +20,7 @@ class CopyFan : public fan::Fan, public Component {
   ;
 
   fan::Fan *source_;
+  FixedVector<std::string> preset_modes_{};
 };
 
 }  // namespace copy