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 |