go-unsafe

Runtime interface type cast (and modification?)

since compiled types are live on binary .rodata, it is not writable*, we need to rebuild the type on runtime, calculate the hashcode (fnv1), assign methods etc etc.

interface represents:

• rtype ptr, where used as type reference.
• word/ptr data, where used as reference to data.

interface method implementation (dict.type|interface):

• another rtype, contains functions/methods coresponding to itab.
• referencing primitive type on (*rtype).ptrdata.

runtime inspect type modification:

• example

generic pointer casting/reinterpretation:

• example:

  var (
      a = new(uint64)
      b *int64
  )
  CastPtr(&b, a)
  

  var a = new(uint64)
  b := ReinterpretPtr[int64](a) // b *int64
  

  or if you wish to

  b := ReinterpretPtr[uint64](0x600000) // *uint64