garbage collection and Ptr/ForeignPtr/StablePtr

[Bayley, Alistair]

Should I expect that Ptr memory allocated with malloc is garbage collected
when no longer used by the Haskell runtime? The FFI spec doesn't say so
explicitly (that I could see); AFAICT this is how the pointer types behave:
  Ptr : freed when no longer used/referenced
  ForeignPtr : like Ptr, but will also run a finaliser when freed
  StablePtr : not freed or collected

(I haven't tested this; I've only read the FFI spec.)


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