GitLab

Move rules in GHC.Base to PrelRules and convert them to BuiltinRules.

Nicolas Trangez authored Jul 11, 2012 and Simon Marlow committed Jul 13, 2012

See: #7067
See: http://hackage.haskell.org/trac/ghc/ticket/7067
See: http://www.haskell.org/pipermail/glasgow-haskell-users/2012-July/022579.html

joeyadams authored Jul 07, 2012 and Simon Marlow committed Jul 10, 2012

Also, add a warning to modifySTRef, mostly copy-pasted from the warning
for modifyIORef.

As per discussion on the libraries list.

Ensure numberToRangedRational returns Nothing immediately if the
exponent is outside Int range, so that we avoid an integer overflow
later.

Patch by Johan Tibell <johan.tibell@gmail.com>

Also Control.Concurrent.{mergeIO,nmergeIO}, which use those modules.

There is no real reason for it to be in ghc-prim, and it
complicates things.

Patch by Lennart Augustsson.

This allows them to be shared with integer-gmp

This completes the proposal from trac #4865.

Add getGCStatsEnabled function which checks whether GC stats have been
enabled (with `-T`, for example).

Make getGCStats throw an exception if called with GC stats disabled.