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| author | Herbert Valerio Riedel <hvr@gnu.org> | 2014-08-31 11:40:50 +0200 |
|---|---|---|
| committer | Herbert Valerio Riedel <hvr@gnu.org> | 2014-08-31 12:25:16 +0200 |
| commit | 393b820233caa00e428affc28e090b496d181664 (patch) | |
| tree | 3cd003a4d12d3c0d6145a180b25078807970472f /libraries/base | |
| parent | b760cc59b26a407dcd5715920c64f53513e65f14 (diff) | |
| download | haskell-393b820233caa00e428affc28e090b496d181664.tar.gz | |
Re-export Word from Prelude (re #9531)
The original proposal text can be found at
http://www.haskell.org/pipermail/libraries/2014-August/023491.html
The proposal passed with a clear majority, and was additionally
confirmed by the core libraries committee.
*Compatibility Note*
Only code that imports `Data.Word` for the sole purpose of using `Word`
*and* requires to be `-Werror`-clean (due to `-fwarn-unused-imports`)
is affected by this change.
In order to write warning-free forward/backward compatible against `base`,
a variant of the following CPP-based snippet can be used:
-- Starting with base>4.7.0 or GHC>7.8 Prelude re-exports 'Word'
-- The following is needed, if 'Word' is the *only* entity needed from Data.Word
#ifdef MIN_VERSION_base
# if !MIN_VERSION_base(4,7,1)
import Data.Word (Word)
# endif
-- no cabal_macros.h -- fallback to __GLASGOW_HASKELL__
#elif __GLASGOW_HASKELL__ < 709
import Data.Word (Word)
#endif
This also updates the haddock submodule in order to avoid a compile warning
Diffstat (limited to 'libraries/base')
| -rw-r--r-- | libraries/base/Prelude.hs | 2 | ||||
| -rw-r--r-- | libraries/base/changelog.md | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/libraries/base/Prelude.hs b/libraries/base/Prelude.hs index 9b1119e155..3a3cc4dcc2 100644 --- a/libraries/base/Prelude.hs +++ b/libraries/base/Prelude.hs @@ -48,7 +48,7 @@ module Prelude ( -- *** Numeric types Int, Integer, Float, Double, - Rational, + Rational, Word, -- *** Numeric type classes Num((+), (-), (*), negate, abs, signum, fromInteger), diff --git a/libraries/base/changelog.md b/libraries/base/changelog.md index 28005f8986..b9768119be 100644 --- a/libraries/base/changelog.md +++ b/libraries/base/changelog.md @@ -20,6 +20,8 @@ * Make `abs` and `signum` handle (-0.0) correctly per IEEE-754. + * Re-export `Data.Word.Word` from `Prelude` + ## 4.7.0.1 *Jul 2014* * Bundled with GHC 7.8.3 |