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[template] Use distinct empty types so both unused select members take no space (#20141)

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This commit is contained in:
J. Nick Koston
2026-10-05 12:02:18 +13:00
committed by GitHub
parent 2f9e37d6a9
commit 3a06318b65
1 changed files with 4 additions and 3 deletions
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esphome/components/template/select/template_select.h
+4 -3
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@@ -9,7 +9,8 @@
namespace esphome::template_ {
struct Empty {};
// Distinct per member: two empty members of the same type cannot share an address
template<int N> struct Empty {};
class BaseTemplateSelect : public select::Select, public PollingComponent {};
void dump_config_helper(BaseTemplateSelect *sel_comp, bool optimistic, bool has_lambda, size_t initial_option_index,
@@ -59,8 +60,8 @@ class TemplateSelect : public BaseTemplateSelect {
if constexpr (RESTORE_VALUE)
this->pref_.save(&index);
}
[[no_unique_address]] std::conditional_t<HAS_LAMBDA, TemplateLambda<std::string>, Empty> f_{};
[[no_unique_address]] std::conditional_t<RESTORE_VALUE, ESPPreferenceObject, Empty> pref_{};
[[no_unique_address]] std::conditional_t<HAS_LAMBDA, TemplateLambda<std::string>, Empty<0>> f_{};
[[no_unique_address]] std::conditional_t<RESTORE_VALUE, ESPPreferenceObject, Empty<1>> pref_{};
};
/// Template select with set_action trigger - only instantiated when set_action is configured