An Array# of size zero is a perfectly reasonable thing. If it doesn't
work, it should (and I vaguely recall making it work at some point in
the past, but perhaps I failed to add a test and as a result it has
rotted...)
Cheers,
Simon
On 22/08/11 17:08, Johan Tibell wrote:
I agree
It could well be that it's some later primop that's failing due to the
empty size, like my new copyArray# primop. If that's the case I could
fix it but I would probably would have to add a branch to the
copyArray# primop, which I'm reluctant to do.
On Tue, Aug 23, 2011 at 9:47 PM, Simon Marlow
You could make it a precondition of copyArray#, although that's slightly
less pleasant from a user's perspective.
Cheers,
Simon
On 23/08/11 21:04, Johan Tibell wrote:
It could well be that it's some later primop that's failing due to the
empty size, like my new copyArray# primop. If
Right. That's an option.
On Tue, Aug 23, 2011 at 10:31 PM, Simon Marlow marlo...@gmail.com wrote:
You could make it a precondition of copyArray#, although that's slightly
less pleasant from a user's perspective.
Cheers,
Simon
On 23/08/11 21:04, Johan Tibell wrote:
It could well be
On Mon, Aug 22, 2011 at 5:55 AM, Edward Z. Yang ezy...@mit.edu wrote:
stg_newArrayzh in rts/PrimOps.cmm doesn't appear to give any indication,
so this might be a good patch to add. But I'm curious: what would
allocating Array#s of size 0 do? Null pointers? That sounds dangerous...
I would
It would still be nice to have a consistent base case.
On Mon, Aug 22, 2011 at 3:43 AM, Johan Tibell johan.tib...@gmail.comwrote:
On Mon, Aug 22, 2011 at 5:55 AM, Edward Z. Yang ezy...@mit.edu wrote:
stg_newArrayzh in rts/PrimOps.cmm doesn't appear to give any indication,
so this might be a
I agree (unless it has a performance cost). I had to fix a couple of
bugs in my code associated with generating zero-length arrays.
On Mon, Aug 22, 2011 at 5:54 PM, Edward Kmett ekm...@gmail.com wrote:
It would still be nice to have a consistent base case.
On Mon, Aug 22, 2011 at 3:43 AM,
,
I'm seeing a segfault which I suspect is due to allocating Array#s of
size 0, using newArray#. Are zero length arrays allowed? What are the
preconditions of newArray#? It'd be great if they were documented.
-- Johan
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Glasgow-haskell-users
Hi,
I'm seeing a segfault which I suspect is due to allocating Array#s of
size 0, using newArray#. Are zero length arrays allowed? What are the
preconditions of newArray#? It'd be great if they were documented.
-- Johan
___
Glasgow-haskell-users