#5688: instance Read Integer/Rational/Double readsPrec out of memory and crash
due
to exponential notation
---------------------------------+------------------------------------------
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):
While read fails, 10.10 is a legal Rational Haskell value
{{{
*Main> 10.10 :: Rational
101 % 10
*Main> read "10.10" :: Rational
*** Exception: Prelude.read: no parse
}}}
and
{{{
main = print (1E100000000000 :: Rational)
}}}
crashes the compiler as happens without type annotation currently.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5688#comment:15>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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