[Issue 1696] New: for(;;) in CTFE segfaults compiler

[Ary Borenszweig]

d-bugmail at puremagic.com wrote:
> http://d.puremagic.com/issues/show_bug.cgi?id=1696
> 
>            Summary: for(;;) in CTFE segfaults compiler
>            Product: D
>            Version: 1.023
>           Platform: PC
>         OS/Version: Windows
>             Status: NEW
>           Severity: normal
>           Priority: P2
>          Component: DMD
>         AssignedTo: bugzilla at digitalmars.com
>         ReportedBy: clugdbug at yahoo.com.au
> 
> 
> Seems it's not checking for an empty iteration clause.
> Putting _anything_ in there, eg for(;;null) stops the segfault.
> ---------
> int a()
> {
>     bool b = false;
>     for (;;) {
>         if (b) return 0;
>         b = true;
>     }
> }
> 
> const c = a();
> 
> 

What if there is a break somewhere in the empty for? The compiler can't 
know that the function will end it's execution. I think it would be 
weird if the compiler didn't hang up or segfault on this.