[GHC] #14959: Heep overflow in optimizer
GHC
ghc-devs at haskell.org
Wed Mar 21 17:32:33 UTC 2018
#14959: Heep overflow in optimizer
-------------------------------------+-------------------------------------
Reporter: darchon | Owner: (none)
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 8.4.1
Keywords: | Operating System: Unknown/Multiple
Architecture: | Type of failure: None/Unknown
Unknown/Multiple |
Test Case: | Blocked By:
Blocking: | Related Tickets:
Differential Rev(s): | Wiki Page:
-------------------------------------+-------------------------------------
Compiling the following with optimisations:
{{{
module Test where
import Data.Bits (setBit)
f = foldl setBit 0 [x | (x,_) <- zip [0..] [1]] :: Integer
}}}
fails with:
{{{
$ ghc -O0 -fforce-recomp Test.hs
[1 of 1] Compiling Test ( Test.hs, Test.o )
$ ghc -O -fforce-recomp Test.hs
[1 of 1] Compiling Test ( Test.hs, Test.o )
ghc: panic! (the 'impossible' happened)
(GHC version 8.4.1 for x86_64-unknown-linux):
heap overflow
}}}
Fails on 8.0.2, 8.2.2, and 8.4.1
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14959>
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