#7361: Segmentation fault on 5f37e0c71ff4af8539c5aebc739b006b4f0c6ebf
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Reporter: bgamari | Owner: simonmar
Type: bug | Status: new
Priority: highest | Milestone: 7.8.1
Component: Compiler | Version: 7.7
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: Runtime crash
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Comment(by simonmar):
I reproduced this today, but didn't get very far with diagnosing it
because the code that fails is very complicated. Something is writing
beyond the end of an `ARR_WORDS`, and the code blob that does it is in
`random-source:Data.Random.Source.MWC.$wa`, but that function is huge and
I have no idea what it is supposed to do. The error could well be
somewhere else. We could add some bounds checks to the array primitives
(maybe with `-debug`), though I think it probably wouldn't help me in this
case.
I have some other bugs I'm chasing so hopefully this one will get fixed as
a side-effect of fixing something else. Failing that, we will need a
smaller test case.
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7361#comment:7>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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