#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: patch
Priority: highest | Milestone: 7.4.1
Component: libraries/base | Version: 6.12.3
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: Runtime crash
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Comment(by maeder):
I think, read should behave like the haskell scanner and "10.01e10 ::
Rational" should be rejected with "No instance for (Floating Rational)" as
"10.01 :: Integer" is with:
{{{
Prelude> 10.10 :: Integer
<interactive>:1:1:
No instance for (Fractional Integer)
arising from the literal `10.1'
...
}}}
Another question is, if leading or trailing zeros should be preserved for
messages.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5688#comment:16>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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