#6041: Program hangs when run under Ubuntu Precise
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Reporter: dsf | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.4.1 | Keywords:
Os: Linux | Architecture: Unknown/Multiple
Failure: Runtime crash | Testcase:
Blockedby: | Blocking:
Related: |
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Changes (by JeremyShaw):
* cc: JeremyShaw (added)
Comment:
The tool chain for the real precise machine and the precise chroot were
both installed by apt-get installing the same build of GHC. The
environments should be nearly identical aside from things like the kernel,
which are not affected by chroot.
The fact that the code does not work in the real precise environment is
mysterious on its own. Especially given the types of changes that make it
work. However, we have seen that type of bug before. But, what makes this
bug even more mysterious is the fact that some subtle aspect of the
environment the compiler is running in is also significant. Though, it
does seem like STM is needed to trigger the bug -- which could indicate
that the RTS is involved? Some aspect that is effected by the environment
the code is built in, rather than the environment it is run in?
We could possibly provide ssh access to a machine that exhibits this bug
if needed. We are currently only running precise on a laptop, so its
availability is variable.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6041#comment:1>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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