Compiler Error C3666
'constructor' : override specifier 'keyword' not allowed on a constructor
An override specifier was used on a constructor, and that is not allowed. For more information, see Override Specifiers.
Example
The following sample generates C3666.
// C3666.cpp
// compile with: /clr /c
ref struct R {
R() new {} // C3666
R(int i) {} // OK
};