On 27-07-2012 05:32, Ali Çehreli wrote:
On 07/26/2012 06:58 PM, Stuart wrote: > On Friday, 27 July 2012 at 00:23:54 UTC, Ali Çehreli wrote:> Well, kinda. "Goto case" and such are one thing, but allowing the > arbitrary use of goto for jumping around from label to label.... I just > don't understand why the language even supports this. Unlike C++, the language disallows unsafe jumping forward (or is it dmd that disallows it?). Hmmm... Maybe I am wrong... (?) I swear, the following code used to generate a compilation error: if (aCondition) { goto label; // Jumps over s's constructor call } auto s = S(7); label: s.foo(); The error used to say: "Error: cannot goto forward into different try block level." The code is allowed by dmd 2.059. The code is allowed for classes as well but of course there is a segmentation faault due to foo() on the null object. Strange... > Anyone using 'goto > label' in their code is doing it wrong. Period. I agree. Ali
Jumping over initialization isn't as problematic in D because variables are guaranteed to have a default initialization value (if not initialized to void). It's worse in languages like C where the value of variables would be undefined.
-- Alex Rønne Petersen a...@lycus.org http://lycus.org
