[fpc-devel] Dangerous optimization in CASE..OF

[Jonas Maebe]

On 16/07/17 16:34, DaWorm wrote:
> If the programmer builds a case statement on an enum, that includes all 
> of the possible enum values, and also includes an else clause, to me it 
> seems the programmer is implicitly telling the compiler that there is 
> the possibility of illegal values stored in the enum.

Writing unreachable code never has constituted implicitly telling a 
compiler anything in any programming language. At best, you will get a 
warning from the compiler that the code is unreachable.

You don't want a compiler to start second-guessing what you might have 
meant when you wrote something. Everything must be 100% unambiguous.


Jonas