Error: Due to an error in the Preprocessor is the Operator „mod“ used in Constant-expressions wrong or results in a compiler-crash.

• Solution: use the custom macro function

const test = 123 mod 10

#define DEF_MOD(a,b) as word( (a) - (b)*word((a) /(b)) ) 
const test = 123 DEF_MOD 10