[Issue 18529] .ptr on arrays can no longer be used in @safe code prevents valid code

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18529

ag0aep6g at gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ag0aep6g at gmail.com

--- Comment #9 from ag0aep6g at gmail.com ---
(In reply to Timothee Cour from comment #0)
> NOTE: the rationale for that deprecation was that the pointer can't be
> dereferenced. However that's no different from the following:
> class A{...}
> A a;
> // valid in safe code even though `a` is null and can't be derefenced.

Because no one seems to have addresses this so far:

Null dereferences are considered @safe. A null dereference is assumed to lead
to a segfault which stops the program, preventing memory corruption.

The problem with `.ptr` isn't null. The problem is that the pointer can be
invalid despite not being null.

--