From afe628d62c587a52f22c23489d0455a4d67282ca Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Tue, 28 Oct 2025 14:59:42 -0500
Subject: [PATCH] test

---
 esphome/components/api/proto.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/esphome/components/api/proto.h b/esphome/components/api/proto.h
index cc14fa1c8a..7809d15fea 100644
--- a/esphome/components/api/proto.h
+++ b/esphome/components/api/proto.h
@@ -230,10 +230,11 @@ class ProtoWriteBuffer {
       return;
     }
 
-    uint8_t *p = this->buffer_->data() + start;
+    uint8_t *p;
     if (value < 16384) {
       // 2 bytes
       this->buffer_->resize(start + 2);
+      p = this->buffer_->data() + start;
       p[0] = (value & 0x7F) | 0x80;
       p[1] = (value >> 7) & 0x7F;
       return;
@@ -241,6 +242,7 @@ class ProtoWriteBuffer {
     if (value < 2097152) {
       // 3 bytes
       this->buffer_->resize(start + 3);
+      p = this->buffer_->data() + start;
       p[0] = (value & 0x7F) | 0x80;
       p[1] = ((value >> 7) & 0x7F) | 0x80;
       p[2] = (value >> 14) & 0x7F;
@@ -249,6 +251,7 @@ class ProtoWriteBuffer {
     if (value < 268435456) {
       // 4 bytes
       this->buffer_->resize(start + 4);
+      p = this->buffer_->data() + start;
       p[0] = (value & 0x7F) | 0x80;
       p[1] = ((value >> 7) & 0x7F) | 0x80;
       p[2] = ((value >> 14) & 0x7F) | 0x80;
@@ -274,6 +277,7 @@ class ProtoWriteBuffer {
     }
 
     this->buffer_->resize(start + size);
+    p = this->buffer_->data() + start;
     size_t bytes = 0;
     while (value) {
       uint8_t temp = value & 0x7F;