Make constructor more constinit-friendly

This commit is contained in:
Herb Sutter 2020-12-18 12:27:33 -08:00
parent c78ad8661c
commit 71fd73fa04

View File

@ -109,12 +109,7 @@ public:
using handler = void (*)();
#endif
#if defined(__cpp_constexpr) && __cpp_constexpr >= 201806
constexpr contract_group (handler h) { set_handler(h); }
#else // VESTIGIAL, remove when no longer needed for downlevel compilers
constexpr contract_group (handler h) : chandler(h ? h : []()noexcept{}) { }
#endif
#if __cplusplus >= 202002L
constexpr auto set_handler(handler h) -> handler { return std::exchange(chandler, h ? h : []()noexcept{}); }
#else // VESTIGIAL, remove when no longer needed for downlevel compilers