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This commit is contained in:
J. Nick Koston
2025-11-23 21:20:23 -06:00
parent 1e886b8885
commit 48f0e52f9d
1 changed files with 5 additions and 3 deletions
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esphome/core/application.h
+5 -3
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@@ -105,11 +105,13 @@ class Application {
arch_init();
this->name_add_mac_suffix_ = name_add_mac_suffix;
if (name_add_mac_suffix) {
// MAC address length: 12 hex chars + null terminator
constexpr size_t mac_address_len = 13;
// MAC address suffix length (last 6 characters of 12-char MAC address string)
constexpr size_t mac_address_suffix_len = 6;
const std::string mac_addr = get_mac_address();
// Use pointer + offset to avoid substr() allocation
const char *mac_suffix_ptr = mac_addr.c_str() + mac_address_suffix_len;
char mac_addr[mac_address_len];
get_mac_address_into_buffer(mac_addr);
const char *mac_suffix_ptr = mac_addr + mac_address_suffix_len;
this->name_ = make_name_with_suffix(name, '-', mac_suffix_ptr, mac_address_suffix_len);
if (!friendly_name.empty()) {
this->friendly_name_ = make_name_with_suffix(friendly_name, ' ', mac_suffix_ptr, mac_address_suffix_len);