A bug of multicore IO manager
Kazu Yamamoto ( 山本和彦 )
kazu at iij.ad.jp
Thu Sep 5 14:10:40 CEST 2013
> If you need two Ctrl-Cs to kill the program, it probably means that it
> deadlocked somewhere, maybe in the RTS. Kazu: if you can attach to
> the deadlocked process with gdb and get stack traces of all the
> threads, that might help.
To debug with GDB, I complied Mighty with "-debug". This changes the
behavior and I got the following error:
mighty-20130905: internal error: ASSERTION FAILED: file rts/sm/MarkWeak.c, line 371
(GHC version 7.7.20130901 for i386_unknown_linux)
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
Simon, can you tell what's going on?
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