io-sim: exported TraceInternalError

Author: coot

io-sim/src/Control/Monad/IOSim.hs

@@ -43,7 +43,16 @@ module Control.Monad.IOSim
   , unshareClock
     -- * Simulation trace
   , type SimTrace
-  , Trace (Cons, Nil, SimTrace, SimPORTrace, TraceDeadlock, TraceLoop, TraceMainReturn, TraceMainException, TraceRacesFound)
+  , Trace (Cons,
+           Nil,
+           SimTrace,
+           SimPORTrace,
+           TraceDeadlock,
+           TraceLoop,
+           TraceMainReturn,
+           TraceMainException,
+           TraceRacesFound,
+           TraceInternalError)
   , SimResult (..)
   , SimEvent (..)
   , SimEventType (..)