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-rw-r--r--compiler/specialise/SpecConstr.lhs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/specialise/SpecConstr.lhs b/compiler/specialise/SpecConstr.lhs
index 5fc0226941..b544f9bffd 100644
--- a/compiler/specialise/SpecConstr.lhs
+++ b/compiler/specialise/SpecConstr.lhs
@@ -1749,7 +1749,7 @@ samePat (vs1, as1) (vs2, as2)
same e1 (Note _ e2) = same e1 e2
same e1 (Cast e2 _) = same e1 e2
- same e1 e2 = WARN( bad e1 || bad e2, ppr e1 $$ ppr e2)
+ same e1 e2 = WARN( dflags, bad e1 || bad e2, ppr e1 $$ ppr e2)
False -- Let, lambda, case should not occur
bad (Case {}) = True
bad (Let {}) = True