#4934: threadWaitRead works incorrectly on nonthreaded RTS
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Reporter: slyfox | Owner: simonmar
Type: bug | Status: new
Priority: high | Milestone: 7.0.3
Component: Runtime System | Version: 7.0.1
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Linux | Blocking:
Architecture: x86_64 (amd64) | Failure: Incorrect result at runtime
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Comment(by slyfox):
Replying to [comment:4 simonmar]:
> I've tried this program on a couple of different machines (32 and 64-bit
Linux) with several versions of GHC, and haven't managed to reproduce the
error. Does it fail right away for you?
Does the first test '''(main = threadWaitRead 12 >> print "yet input!")'''
work for you and shows an error in nonthreaded case?
For me it works incorrectly (does not show any errors) in:
- ghc-6.12.3 nonthreaded
- ghc-6.12.3 threaded
- ghc-7.0.1 nonthreaded
The second test (in tarball) fails only on ghc-7.0.1 nonthreaded.
The test is factored out from xmobar sources. The failure is 100%
reproducible on two machines.
> Can you tell me more about your setup? (exact versions of tools etc.)
Does it fail on a different machine for you?
It's my amd64 gentoo desktop (notebook) box with recent software.
Linux kernel 2.6.37, glibc-2.12.2, ghc-7.0.1 (bootstrapped by
7.0.0.20101028)
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4934#comment:5>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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