[GHC] #8695: Arithmetic overflow from (minBound :: Int) `quot` (-1)
GHC
ghc-devs at haskell.org
Tue Jan 28 23:00:27 UTC 2014
#8695: Arithmetic overflow from (minBound :: Int) `quot` (-1)
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Reporter: rleslie | Owner:
Type: bug | Status: patch
Priority: normal | Milestone: 7.8.1
Component: libraries/haskell2010 | Version: 7.6.3
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture:
Type of failure: Incorrect result at runtime | Unknown/Multiple
Test Case: | Difficulty:
Blocking: | Unknown
| Blocked By:
| Related Tickets: #1042
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Comment (by hvr):
Replying to [comment:14 rwbarton]:
> [...]
> Unfortunately, there is no choice of behavior that is best in all
contexts. For the kinds of programs I most often write, which are
computations I run on my own computer, raising an exception is preferable
("safer").
> [...]
IMHO, different types should be used for different contexts. If you want
exceptions on any kind of overflow, use something like hackage:safeint, if
you don't want overflows at all, use `Integer`, and if want wrap-around on
overflow, use plain `Int`s.
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8695#comment:21>
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