#5688: instance Read Integer/Rational/Double readsPrec out of memory and crash
due
to exponential notation
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Reporter: gracjan | Owner:
Type: bug | Status: new
Priority: highest | Milestone: 7.4.2
Component: libraries/base | Version: 6.12.3
Resolution: | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: Runtime crash | Difficulty: Unknown
Testcase: | Blockedby:
Blocking: | Related:
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Comment(by maeder):
A fix should be easy. If the `Rat` constructor is not changed or removed
it should be at least filled with the fractionals that are given without
"e" (to allow some user code to go through, although with reduced
functionality).
The `Exp` constructor should store the fractional part as `Rational`
rather than shifting it to an `Integer` an decreasing the exponent.
A combination of the `Rat` and `Exp` constructores is then essential
Daniels suggestion `"| RatExp Rational (Maybe Integer)"`.
An advantage of removing `Rat` would be to better detect code that uses
it.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5688#comment:37>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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