What should happen here?
Steven Schveighoffer
schveiguy at gmail.com
Mon Sep 20 18:51:23 UTC 2021
On 9/20/21 2:39 PM, IGotD- wrote:
> On Monday, 20 September 2021 at 18:26:59 UTC, Steven Schveighoffer wrote:
>> Without any context, what do you think should happen here?
>>
>
> Is this a trick question?
Of course it's a trick question! No normal questions are asked this way ;)
>
> In a perfect world I think option 1 should happen.
>
> However doesn't it depend on how the compiler decide what to do with
> variable c. It can be in a register or it can be on stack. If it is on
> stack, then the GC believe it is still in use. If it is in a register,
> then the compiler is likely to optimize c away before the loop and the
> GC destroys it.
>
> In reality, I guess option 4.
>
You are kind of right. The question I bring up, just posted, is how do
you solve passing a class reference into a C library that should only be
used during the function?
-Steve
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