Address error C2512 when compiling with Visual Studio

Using a default value, VS2019 (VC 14.1) complains about a missing default constructor for UnitSystem.
Cantera · Aug 5, 2019 · fdd243c · fdd243c
1 parent bfa5a66
commit fdd243c
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/include/cantera/base/Units.h b/include/cantera/base/Units.h
@@ -101,7 +101,11 @@ class UnitSystem
 {
 public:
     //! Create a unit system with the specified default units
-    UnitSystem(std::initializer_list<std::string> units={});
+    UnitSystem(std::initializer_list<std::string> units);
+
+    //! Default constructor for unit system (needed as VS2019 does not
+    //! recognize optional argument with default value)
+    UnitSystem() : UnitSystem({}) {}
 
     //! Set the default units to convert from when explicit units are not
     //! provided. Defaults can be set for mass, length, time, quantity, energy,