#2918: Storable alignment for Double is 4
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Reporter: guest | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler (FFI)
Version: 6.10.1 | Severity: normal
Keywords: | Testcase:
Os: Unknown/Multiple | Architecture: x86
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The alignment for Double is 4. This makes little sense, it should be 8.
That's the alignment that guarantees best performance, and is also
necessary on some architectures.
(On x86 a Double can be byte align, so any value from 1 and up works for
the alignment, but 8 is the natural one.)
{{{
import Foreign.Storable
main = print (alignment (0::Double))
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2918>
GHC <http://www.haskell.org/ghc/>
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