#7052: Numeric types’ Read instances use exponential CPU/memory
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Reporter: andersk | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: libraries/base | Version: 7.4.2
Resolution: | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: Runtime performance bug | Difficulty: Unknown
Testcase: | Blockedby:
Blocking: | Related: #5688
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Comment(by andersk):
Also it looks like GHC itself (also 7.4.2) is not using the improved
`read`, as compiling `x = 1e99999999` or typing `1e99999999` into GHCi
uses lots of CPU and memory for several seconds, although this is of
course a less critical problem.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7052#comment:4>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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