castError.cfa:23:1 error: Cannot choose between 3 alternatives for expression Explicit Cast of: Name: f ... to: char Alternatives are: Cost ( 1, 0, 0, 0, 0, 0, 0 ): Explicit Cast of: Variable Expression: f: function accepting unspecified arguments ... returning nothing ... to: char (types: char ) Environment: Cost ( 1, 0, 0, 0, 0, 0, 0 ): Explicit Cast of: Variable Expression: f: double ... to: char (types: char ) Environment: Cost ( 1, 0, 0, 0, 0, 0, 0 ): Explicit Cast of: Variable Expression: f: signed int ... to: char (types: char ) Environment: castError.cfa:28:1 error: Cannot choose between 2 alternatives for expression Generated Cast of: Comma Expression: constant expression (3 3: signed int) Name: v ... to: nothing Alternatives are: Cost ( 0, 0, 2, 0, 0, 0, 0 ): Generated Cast of: Comma Expression: constant expression (3 3: signed int) Variable Expression: v: unsigned char ... to: nothing (types: void ) Environment: Cost ( 0, 0, 2, 0, 0, 0, 0 ): Generated Cast of: Comma Expression: constant expression (3 3: signed int) Variable Expression: v: signed short int ... to: nothing (types: void ) Environment: castError.cfa:30:1 error: No reasonable alternatives for expression Explicit Cast of: Name: sint ... to: instance of struct S with body 1 ... with parameters char