On Sat, 17 Jan 2015 23:20:30 +0000 Luís Gabriel <lam...@gmail.com> wrote:
> Hi there, > > I'm doing some experiments with the GHC time profiler and I need to add a > new field to the Cost Centre structures. I managed to add the field in the > *CCS.h* header as well as in *codeGen/StgCmmProf.hs* but for some reason > the program is crashing during garbage collection. > > As I have no experience with the GHC internals, I'm having trouble to find > the problem. It would be very nice if someone could give me some clue to > find this bug. > > The patch on GHC as well as the test sample and stack traces can be found > here: https://gist.github.com/luisgabriel/39d51cf4d661c7e62e22 I tried your patch as-is on current ghc-HEAD/amd64 and it works fine. (might easily be another problem) What I am suspicious about is you are using '-prof -debug' and plain 'ghc'. Could it be that you didn't add GhcRTSWays += debug_p in your build.mk after a patch was tweaked last time and some old runtime against new ghc was used? I usually use inplace/bin/ghc-stage2 right after compilation without installation. -- Sergei
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