From 12663901ab40a584c71715d847111612b23e1991 Mon Sep 17 00:00:00 2001
From: Nicu Hodos <nicu@hodos.ro>
Date: Fri, 10 Oct 2025 23:34:42 +0200
Subject: [PATCH] use precise length for storing state topic

---
 src/ha.h | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/ha.h b/src/ha.h
index d89a6be..4f43010 100644
--- a/src/ha.h
+++ b/src/ha.h
@@ -186,14 +186,17 @@ namespace Ha {
     };
 
     struct State : Config {
-        char topic[TOPIC_SIZE] = {};
+        char* topic;
         const char* jsonAttributesTemplate = nullptr;
         const char* valueTemplate = nullptr;
 
-        State(Component* cmp) : cmp(cmp) {}
+        State(Component* cmp) : cmp(cmp) {
+            auto len = snprintf(nullptr, 0, BASE_TOPIC"/state", cmp->id);
+            topic = new char[len + 1];
+        }
 
         void withStateTopic() {
-            snprintf(topic, sizeof(topic),  BASE_TOPIC"/state", cmp->id);
+            sprintf(topic, BASE_TOPIC"/state", cmp->id);
         }
 
         void updateState(const char* message) {