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9252 :: Question about pointers

[2022-06-20T20:13:40+02:00]

I have this code:

let buff = alloc(4)
let srcBuff = [25'u8, 0, 0, 0]
copyMem(buff, srcBuff.unsafeAddr, 4)
let value = cast[ptr int32](buff)[]
dealloc(buff)
echo $value

Does value is now a 'managed' var? Can i safelly dealloc the buffer like I did?

Yardanico (orginal) [2022-06-20T20:17:52+02:00] view original

value becomes "managed", yes, because you copied it to a new stack variable and can safely deallocate buff.