Hello,
I'm try to figure out the contents od the base class instance in D, LDC Windows 64bit.
I'm sure that there is a 8 byte VMT pointer.
But unable to fund information about the remaining 8 byte. I guess it must be a unique 8byte (void* ?) identifier that is useful for Monitor. In a video someone mentioned this as 'magic'.

Is there a documentation about that 'magic' field? I'd love to use some bits in it if I'm sure about the consequences.

I have a really small object, only 32 bytes. At this point if I want to add a flag bit I have 3 choices: - add a new field to the class -> effectively the instanceSize will grow by 50% (16bytes with alignment)
- compress the current 16bytes of data. -> eats more cpu
- Hide it somewhere 'magically'.

Thank You in advance!


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