Indeed. I think the point is that Ptr should be thought of as tied to
Storable. If you want to use an Addr# for something else, then you
shouldn't be using Ptr!
On Thu, Nov 1, 2018, 2:13 PM Evan Laforge On Thu, Nov 1, 2018 at 10:47 AM Carter Schonwald
a good example might be Ptr Char. Is this a single location of a 32bit
/ utf32 code point, or an array of utf8 code points or utf32 code points?
is it null terminated vs there being an extra sequence length? These are
all valid things that can be happening. And I'm not sure if it affects your point, but I sure hope a 'Ptr Char'
points to a 4 byte haskell Char as it claims, and 'Ptr CChar' points
to a 1 byte C char, as it claims. Otherwise, sizeOf will be wrong and
array indexing will go out of bounds. Of course, in the C case, whether or not there are further chars after
that and if they are terminated and what is the encoding is all
ambiguous, as it always is for C.
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