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-rw-r--r--compiler/coreSyn/CoreArity.hs3
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/coreSyn/CoreArity.hs b/compiler/coreSyn/CoreArity.hs
index 59c261bfeb..ed46c89fb4 100644
--- a/compiler/coreSyn/CoreArity.hs
+++ b/compiler/coreSyn/CoreArity.hs
@@ -34,6 +34,7 @@ import Outputable
import FastString
import Pair
import Util ( debugIsOn )
+import Data.Foldable ( foldl' )
{-
************************************************************************
@@ -884,7 +885,7 @@ etaExpand n orig_expr
-- See Note [Eta expansion and source notes]
(expr', args) = collectArgs expr
(ticks, expr'') = stripTicksTop tickishFloatable expr'
- sexpr = foldl App expr'' args
+ sexpr = foldl' App expr'' args
retick expr = foldr mkTick expr ticks
-- Wrapper Unwrapper