[template] Use a user provided default constructor for TemplateDateTime

[datetime] Drop the inert constructors, keep the initializers
[datetime] Use user provided default constructors for the date and time entities
2026-10-14 18:22:48 +00:00 · 2026-09-12 05:12:44 -05:00 · 2026-09-12 04:56:11 -05:00 · 2026-09-11 21:30:30 -05:00
5 changed files with 15 additions and 13 deletions
@@ -32,9 +32,9 @@ struct DateEntityRestoreState {

 class DateEntity : public DateTimeBase {
 protected:
-  uint16_t year_;
-  uint8_t month_;
-  uint8_t day_;
+  uint16_t year_{0};
+  uint8_t month_{0};
+  uint8_t day_{0};

 public:
  void publish_state();
@@ -27,7 +27,7 @@ class DateTimeBase : public EntityBase {
  LazyCallbackManager<void()> state_callback_;

 #ifdef USE_TIME
-  time::RealTimeClock *rtc_;
+  time::RealTimeClock *rtc_{nullptr};
 #endif
 };

@@ -35,12 +35,12 @@ struct DateTimeEntityRestoreState {

 class DateTimeEntity : public DateTimeBase {
 protected:
-  uint16_t year_;
-  uint8_t month_;
-  uint8_t day_;
-  uint8_t hour_;
-  uint8_t minute_;
-  uint8_t second_;
+  uint16_t year_{0};
+  uint8_t month_{0};
+  uint8_t day_{0};
+  uint8_t hour_{0};
+  uint8_t minute_{0};
+  uint8_t second_{0};

 public:
  void publish_state();
@@ -33,9 +33,9 @@ struct TimeEntityRestoreState {

 class TimeEntity : public DateTimeBase {
 protected:
-  uint8_t hour_;
-  uint8_t minute_;
-  uint8_t second_;
+  uint8_t hour_{0};
+  uint8_t minute_{0};
+  uint8_t second_{0};

 public:
  void publish_state();
@@ -15,6 +15,8 @@ namespace esphome::template_ {

 class TemplateDateTime final : public datetime::DateTimeEntity, public PollingComponent {
 public:
+  // User provided, not "= default": `new(p) TemplateDateTime()` would zero-fill .bss that is already zero.
+  TemplateDateTime() {}
  template<typename F> void set_template(F &&f) { this->f_.set(std::forward<F>(f)); }

  void setup() override;
Author	SHA1	Message	Date
J. Nick Koston	47f76a1f8b	[template] Use a user provided default constructor for TemplateDateTime	2026-09-12 05:12:44 -05:00
J. Nick Koston	2378962512	[datetime] Drop the inert constructors, keep the initializers	2026-09-12 04:56:11 -05:00
J. Nick Koston	c4d89c89ff	[datetime] Use user provided default constructors for the date and time entities	2026-09-11 21:30:30 -05:00