fault Abc { ABC, DEF, ZED } fault Foo { XYZ } <* hello world @return! Foo, Abc.ABC *> fn void! abc(int a, int b, int z) { return Abc.ZED?; // #error: This value does not match declared optional returns } <* hello world @return! Foo, Abc.ABC *> macro void! @abc(int a, int b, int z) { return Abc.ZED?; // #error: This value does not match declared optional returns } fn void main() { @abc(2,3,3)!!; }