memory safety checks and trust

[Walter Bright]

On 4/14/2020 10:16 AM, Steven Schveighoffer wrote:
> That being said, I agree with the simple case of returning a pointer from a 
> stack variable directly from a function being disallowed. That also can be 
> easily worked around, which should probably be required, but is never correct 
> anyway.

Oh, it can be correct, when one wants to examine the stack pointer value. I've 
used it for that purpose myself. (Examining the stack pointer is valuable when 
determining whether other pointers are pointing into the stack or not.)

As I replied to Timon, you're drawing a subjective (not objective) line at what 
is acceptable or not.