Should the 2.054 feature about warning on implicit fallthrough

[bearophile]

Timon Gehr:

> What would you suggest?

At the moment I suggest nothing, because the situation is set.

Case syntax was discussed a lot, by me too. I suggested to differentiate the syntax, not using ".." because in D they denote an interval open on the right.


> 'C switch' means 'jump table'. It does do that perfectly. ;)

C language is full of badly designed parts :-)


> What is your point?

Well, I don't understand the error it gives :-) Are you able to explain it to me?


import std.stdio;
void main() {
     int i = 1;
     switch(i) {
         case 0:
             writeln("case 0");
             goto default; // needed here
         aLabel:
             writeln("a label");
         default:
             writeln("default");
             // But always falls through here
     }
}

test.d(10): Error: switch case fallthrough - use 'goto default;' if intended

Bye,
bearophile