Use invoke_result_t.

jtv · Feb 19, 2020 · afd43cf · afd43cf
1 parent 8f2915b
commit afd43cf
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/include/pqxx/transactor.hxx b/include/pqxx/transactor.hxx
@@ -15,6 +15,7 @@
 #include "pqxx/internal/compiler-internal-pre.hxx"
 
 #include <functional>
+#include <type_traits>
 
 #include "pqxx/connection.hxx"
 #include "pqxx/transaction.hxx"
@@ -97,7 +98,7 @@ namespace pqxx
  */
 template<typename TRANSACTION_CALLBACK>
 inline auto perform(TRANSACTION_CALLBACK &&callback, int attempts = 3)
-  -> decltype(std::invoke(callback))
+  -> std::invoke_result_t<TRANSACTION_CALLBACK>
 {
   if (attempts <= 0)
     throw std::invalid_argument{