The same is true in C/C++: Function argument evaluation order is unspecified. BUT: that doesn't mean this is undefined behavior, it is just unspecified. unspec

The same is true in C/C++: Function argument evaluation order is unspecified. BUT: that doesn't mean this is undefined behavior, it is just unspecified. unspecified != undefined behavior See this Stack overflow answer for an explanation: https://stackoverflow.com/questions/2397984/undefined-unspecified-and-implementation-defined-behavior https://stackoverflow.com/questions/2397984/undefined-unspec...