Arrays of noncopyables/Invalid memory operation

[ZombineDev via Digitalmars-d-learn]

On Thursday, 18 February 2016 at 01:19:16 UTC, Ali Çehreli wrote:
> On 02/17/2016 05:14 PM, ZombineDev wrote:
>
> > The "Invalid memory operation" error is thrown only by the GC
> (AFAIK)
> > when the user tries something unsupported like allocating or
> freeing in
> > a destructor, while a GC collection is being run.
>
> That. The problem is when the assert check fails (for 
> value==60). The GC fails to create the exception object.
>
> Ali

Hmm, why does the destructor of object 60 run in the middle of 
nowhere? I remember seeing it crash while my debugger was in 
_d_arraysetlengthT [1], though I don't know exactly where because 
I didn't have debug symbols for druntime. __doPostblit[2] checks 
if the type has disabled this(this) and if so it doesn't do 
anything. So the destructor should not have been run because of 
the array resize. Seems like there maybe some memory corruption 
or a bug in druntime.

[1]: 
https://github.com/D-Programming-Language/druntime/blob/e47a00bff935c3f079bb567a6ec97663ba384487/src/rt/lifetime.d#L1265

[2]: 
https://github.com/D-Programming-Language/druntime/blob/e47a00bff935c3f079bb567a6ec97663ba384487/src/rt/lifetime.d#L566