Heap overflow in optimizer
Compiling the following with optimisations:
module Test where
import Data.Bits (setBit)
f = foldl setBit 0 [x | (x,_) <- zip [0..] [1]] :: Integerfails 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 overflowFails on 8.0.2, 8.2.2, and 8.4.1
Trac metadata
| Trac field | Value |
|---|---|
| Version | 8.4.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
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| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |