#2231: GHC RTS Segfault
----------------------------+-----------------------------------------------
Reporter: guest | Owner: simonmar
Type: bug | Status: new
Priority: high | Milestone: 6.8.3
Component: Runtime System | Version: 6.8.2
Severity: normal | Resolution:
Keywords: | Difficulty: Unknown
Testcase: | Architecture: x86_64 (amd64)
Os: Linux |
----------------------------+-----------------------------------------------
Comment (by simonmar):
Using the latest 6.8.3 code with DEBUG on, I get an assertion failure:
{{{
/64playpen/simonmar/2231 > ~/nightly-stable/compiler/stage2/ghc-inplace
--make Control/Concurrent/Session/Queens.hs
[ 1 of 12] Compiling Control.Concurrent.Session.SMonad (
Control/Concurrent/Session/SMonad.hs, Control/Concurrent/Session/SMonad.o
)
[ 2 of 12] Compiling Control.Concurrent.Session.Bool (
Control/Concurrent/Session/Bool.hs, Control/Concurrent/Session/Bool.o )
[ 3 of 12] Compiling Control.Concurrent.Session.Number (
Control/Concurrent/Session/Number.hs, Control/Concurrent/Session/Number.o
)
[ 4 of 12] Compiling Control.Concurrent.Session.List (
Control/Concurrent/Session/List.hs, Control/Concurrent/Session/List.o )
[ 5 of 12] Compiling Control.Concurrent.Session.SessionType (
Control/Concurrent/Session/SessionType.hs,
Control/Concurrent/Session/SessionType.o )
[ 6 of 12] Compiling Control.Concurrent.Session.Runtime (
Control/Concurrent/Session/Runtime.hs,
Control/Concurrent/Session/Runtime.o )
ghc-6.8.2.20080601: panic! (the 'impossible' happened)
(GHC version 6.8.2.20080601 for x86_64-unknown-linux):
ASSERT failed! file typecheck/TcMType.lhs line 442 t_a7Fa{tv}
[tau]
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
}}}
Since this might be related to the resulting crash, I'll confer with Simon
PJ before debugging further.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2231#comment:11>
GHC <http://www.haskell.org/ghc/>
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