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-rw-r--r--asmcomp/split.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/asmcomp/split.ml b/asmcomp/split.ml
index da5cdf1f5..a7effdda3 100644
--- a/asmcomp/split.ml
+++ b/asmcomp/split.ml
@@ -21,7 +21,7 @@ open Mach
type subst = Reg.t Reg.Map.t
-let subst_reg r sub =
+let subst_reg r (sub : subst) =
try
Reg.Map.find r sub
with Not_found ->