From 5046ca164a7436161527b29bf895458b909103ff Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Mon, 12 Jan 2026 17:23:09 -1000
Subject: [PATCH] fix packed buffer

---
 esphome/components/api/api_pb2_dump.cpp | 10 ++++++++--
 script/api_protobuf/api_protobuf.py     | 10 ++++++++--
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/esphome/components/api/api_pb2_dump.cpp b/esphome/components/api/api_pb2_dump.cpp
index 6cbe887c2e..29121f05e0 100644
--- a/esphome/components/api/api_pb2_dump.cpp
+++ b/esphome/components/api/api_pb2_dump.cpp
@@ -28,6 +28,12 @@ static inline void append_with_newline(DumpBuffer &out, const char *str) {
   out.append("\n");
 }
 
+static inline void append_uint(DumpBuffer &out, uint32_t value) {
+  char buf[16];
+  snprintf(buf, sizeof(buf), "%" PRIu32, value);
+  out.append(buf);
+}
+
 // RAII helper for message dump formatting
 class MessageDumpHelper {
  public:
@@ -2484,9 +2490,9 @@ const char *InfraredRFTransmitRawTimingsRequest::dump_to(DumpBuffer &out) const
   dump_field(out, "repeat_count", this->repeat_count);
   out.append("  timings: ");
   out.append("packed buffer [");
-  out.append(std::to_string(this->timings_count_));
+  append_uint(out, this->timings_count_);
   out.append(" values, ");
-  out.append(std::to_string(this->timings_length_));
+  append_uint(out, this->timings_length_);
   out.append(" bytes]\n");
   return out.c_str();
 }
diff --git a/script/api_protobuf/api_protobuf.py b/script/api_protobuf/api_protobuf.py
index 8937e1a88a..7625458f9f 100755
--- a/script/api_protobuf/api_protobuf.py
+++ b/script/api_protobuf/api_protobuf.py
@@ -990,9 +990,9 @@ class PackedBufferTypeInfo(TypeInfo):
         return (
             f'out.append("  {self.name}: ");\n'
             + 'out.append("packed buffer [");\n'
-            + f"out.append(std::to_string(this->{self.field_name}_count_));\n"
+            + f"append_uint(out, this->{self.field_name}_count_);\n"
             + 'out.append(" values, ");\n'
-            + f"out.append(std::to_string(this->{self.field_name}_length_));\n"
+            + f"append_uint(out, this->{self.field_name}_length_);\n"
             + 'out.append(" bytes]\\n");'
         )
 
@@ -2604,6 +2604,12 @@ static inline void append_with_newline(DumpBuffer &out, const char *str) {
   out.append("\\n");
 }
 
+static inline void append_uint(DumpBuffer &out, uint32_t value) {
+  char buf[16];
+  snprintf(buf, sizeof(buf), "%" PRIu32, value);
+  out.append(buf);
+}
+
 // RAII helper for message dump formatting
 class MessageDumpHelper {
  public: