Ticket #3801 (closed bug: invalid)
ghc-6.10.4: internal error: PAP object entered
|Reported by:||patrikja||Owned by:|
|Type of failure:||Runtime crash||Difficulty:|
|Test Case:||Blocked By:|
Running the compiled code for a simple program using WX Haskell + QuickCheck? gives "internal error: PAP object entered". (I cannot submit the source code openly right now because it is a solution to course homework in the course I'm teaching Jan-March, but I could send it to whoever is assigned to this bug. Just ask patrikja+ghc AT gmail .)
The error appeared after adding a dependency on QuickCheck? (in base) and the Control.Monad.Writer (in mtl) - before that it compiled and worked fine.
Searching the trac history most PAP object entered seem to refer to http://hackage.haskell.org/trac/ghc/ticket/1372 but I'm not sure how to make sure no "mismatched library versions" are around. I'd be happy to rebuild / reinstall my whole cabal library setup if there is an easy way to do that.
Another clue may be the libstdc++.so.6 warning I get after each compile - see below. (That warning has been there also for all the working versions of the code so I'm not sure if it is relevant here.)
patrikj@hel:~/src/gitroot/edu/AFP/Lab1_turtle$ make test ghc -package wx --make Lab1_Part2_Task2 [1 of 3] Compiling Turtle ( Turtle.lhs, Turtle.o ) [2 of 3] Compiling Spiral ( Spiral.lhs, Spiral.o ) [3 of 3] Compiling Main ( Lab1_Part2_Task2.lhs, Lab1_Part2_Task2.o ) Linking Lab1_Part2_Task2 ... /usr/bin/ld: warning: libstdc++.so.6, needed by /usr/lib/libwx_baseu-2.8.so, may conflict with libstdc++.so.7 ./Lab1_Part2_Task2 0 91 Lab1_Part2_Task2: internal error: PAP object entered! (GHC version 6.10.4 for i386_unknown_linux) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug make: *** [test] Avbruten (SIGABRT) patrikj@hel:~/src/gitroot/edu/AFP/Lab1_turtle$ uname -a Linux hel 2.6.31-16-generic #53-Ubuntu SMP Tue Dec 8 04:01:29 UTC 2009 i686 GNU/Linux