compilation error when declaring a variable inside a switch statement - page 2

[Slava]

Once more. There is no bug. As designed. I've shown example above explaining what is the reason to prevent such declaration.

[Florin Ionescu]

You are right (considering the variable scope being the whole switch statement). 

But why bracketing doesn't work all the time then?

Now I have at least 40 variable declaration just outside the switch statement because of the "tree optimization error" error. 

Since I got all variables outside switch statement, everything works smooth, and I keep transforming the code continuously.

So there's a high probability that:  bracketing a case in a switch statement + declaring variables inside the brackets = "tree optimization error".

I used bracketing like this:

switch (s) {
 case 1: {
   int i;
   double d;
   //code
 }
 break;
 case 2: {
   int k;
   double xx;
   //code
 }
 break;
}