Jean-Marie Gaillourdet avatar Jean-Marie Gaillourdet committed ada685a

force evaluation of lock before we take it

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Files changed (1)


 -- Ugly workaround to
 typeOf' :: Typeable a => a -> IO TypeRep
 typeOf' x =
- do { () <- takeMVar lock
+ do { lock' <- evaluate lock
+    ; () <- takeMVar lock'
     ; t <- evaluate $ typeOf x
-    ; putMVar lock ()
+    ; putMVar lock' ()
     ; return t
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