Source code with large floating constants in exponential notation cannot be compiled
Source code cannot be compiled:
main = do
print (123e124124124 :: Double)
where this one can be and will work after #5688 (closed) is fixed:
main = do
print (read "123e124124124" :: Double)
Haskell Report forces Float and Double to go through Rational:
http://www.haskell.org/onlinereport/haskell2010/haskellch6.html\#x13-1360006.4.1
When exponent is big it produces very large Rational numbers. That takes a lot of time and usually ends in out of memory condition.
This is similar to #5688 (closed), but at compile time.
Trac metadata
Trac field | Value |
---|---|
Version | 7.2.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | #5688 (closed) |
Blocking | |
CC | |
Operating system | |
Architecture |