Add test for #190

Author: sheaf

test/test.sh

@@ -15,6 +15,7 @@ ticketsBroken=(
   "T0167.hs"
   "T0178.hs"
   "T0189.y"
+  "T0190.hs"
 )
 
 # Colours used to display test outputs.

test/tickets/T0190.hs

@@ -0,0 +1,8 @@
+-- SYNTAX TEST "source.haskell" "Type variables in foreign import/export"
+
+    foreign import ccall unsafe "memcmp"
+      memcmp :: Ptr a -> Ptr ( b :: ty ) -> CSize -> IO CInt
+--                  ^          ^    ^^ - entity.name.function.haskell
+--                  ^          ^    ^^ variable.other.generic-type.haskell
+--                    ^^                 ^^       ^^ keyword.operator.arrow.haskell
+--              ^^^      ^^^                ^^^^^    ^^ ^^^^ 	storage.type.haskell