Re: [Haskell-cafe] ByteString.getContents fails for files >2GB on OS X

Hi Erik, Serge, I have a 64-bit build of GHC: http://www.haskell.org/ghc/dist/7.4.1/ghc-7.4.1-x86_64-apple-darwin.tar.bz2 I think it's fundamentally an OS X issue. The system call read(2) fails for reads >2 GB with EINVAL, even though I have a 64-bit OS X kernel. GHC would need to hack around this issue. Cheers, Shaun On 8 June 2012 05:08, Serge Le Huitouze wrote:

Isn't it more likely to be due to the garbage collector's strategy (copying) ?

--Serge

On Fri, Jun 8, 2012 at 10:29 AM, Erik Hesselink wrote:

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Do you have a 32bit or 64bit GHC build? That might have something to do with it, if you're nearing 2^32 (or 2^31) bytes.

Erik

On Fri, Jun 8, 2012 at 2:25 AM, Shaun Jackman wrote:

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Hi,

Data.ByteString.Char8.getContents fails for files >2GB on OS X. Is there a fix for this?

$ cat getContents.hs main = getContents $ ./getContents

Mac OS X 10.7.4 64-bit

As a workaround, I used ByteString.Lazy instead of the strict ByteString, which worked, but found it was ~4 times slower for my program, so I'd like to get the strict ByteString working with large files.

Cheers, Shaun

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