#5127: internal error heapCensus unknown object with +RTS -N -hT
---------------------------------+------------------------------------------
Reporter: claudiusmaximus | Owner:
Type: bug | Status: new
Priority: normal | Component: Profiling
Version: 7.0.3 | Keywords:
Testcase: | Blockedby:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: Runtime crash
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{{{
$ ghc -O3 -Wall --make -threaded -rtsopts -fspec-constr-count=50
autotune.hs
...
$ ./autotune +RTS -N -hT -RTS
...
autotune: internal error: heapCensus, unknown object: -538405951
(GHC version 7.0.3 for x86_64_unknown_linux)
Please report this as a GHC bug:
http://www.haskell.org/ghc/reportabug
}}}
The unknown object number varies between program runs, and I got a
segmentation fault too in one test.
I didn't manage to provoke a crash with each of -N or -hT alone, but the
combination seems problematic.
I compiled ghc-7.0.3 from source with INTEGER_LIBRARY=integer-simple (so I
can use hmpfr); my code uses hmpfr, parallel, ad, Vec, and possibly some
other things from hackage too - I can try to make a simple test case at
some point, or attach the code as-is if it would be useful.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5127>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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