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-rw-r--r--tcg/tcg.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tcg/tcg.c b/tcg/tcg.c
index a0628fe424..652e8ea6b9 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -1083,7 +1083,7 @@ static void layout_arg_by_ref(TCGCumulativeArgs *cum, TCGHelperInfo *info)
             .ref_slot = cum->ref_slot + i,
         };
     }
-    cum->info_in_idx += n;
+    cum->info_in_idx += n - 1;  /* i=0 accounted for in layout_arg_1 */
     cum->ref_slot += n;
 }