#4283: Different behaviour with -O in concurrent program
---------------------------+------------------------------------------------
Reporter: simonpj | Owner: simonmar
Type: bug | Status: closed
Priority: normal | Milestone: 6.16.1
Component: Compiler | Version: 6.12.3
Resolution: invalid | Keywords:
Testcase: | Blockedby:
Difficulty: | Os: Unknown/Multiple
Blocking: | Architecture: Unknown/Multiple
Failure: None/Unknown |
---------------------------+------------------------------------------------
Changes (by simonmar):
* status: new => closed
* resolution: => invalid
Comment:
The problem is here:
{{{
let rest' = assert ((fromIntegral $ C.length rest') <= capacity) $
C.pack rest
}}}
`rest'` is `_|_`, which accounts for the `<<loop>>`, and the assert is
only executed when optimisation is off, which accounts for the different
behaviour when compiled with optimisation on.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4283#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
_______________________________________________
Glasgow-haskell-bugs mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
