[Cython] Status

[John Skaller2]

> On 1 Feb 2020, at 20:00, Greg Ewing <greg.ewing at canterbury.ac.nz> wrote:
> 
> On 1/02/20 3:29 pm, John Skaller2 wrote:
>> But the all hell breaks loose for pointers. Your hack only
>> works for rvalues.
> 
> Yes, using these it's possible for Cython to accept something
> that will later be rejected by the C compiler. It's not perfect,
> but it gets the job done most of the time.

My concern is that the C compiler wont reject it, the program
will corrupt data or crash:

	int32_t *x=..; *x = 42;
	int64_t *x=..; *x = 42;

The C compiler will overwrite 4 or 8 bytes. Which one matters.
In an rvalue context it probably doesn’t matter, in an lvalue
context it does. But probably this doesn’t happen in Cython.

 —
John Skaller
skaller at internode.on.net