Wibble to recomp006 error

I think this didn't show up before with --fast?

testsuite/tests/driver/recomp006/recomp006.stderr

 
-A.hs:8:6:
-    No instance for (Num (Int :- Int))
-      arising from the literal `1'
-    Possible fix: add an instance declaration for (Num (Int :- Int))
-    In the expression: 1
-    In the expression: (1, (2, 3))
-    In an equation for `f': f = (1, (2, 3))
-
 A.hs:8:8:
-    Couldn't match expected type `Int' with actual type `(t0, t1)'
+    Couldn't match expected type `Int'
+                with actual type `(Integer, Integer)'
     In the expression: (2, 3)
     In the expression: (1, (2, 3))
     In an equation for `f': f = (1, (2, 3))