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-rw-r--r--lisc/parse.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/lisc/parse.c b/lisc/parse.c
index 7fbe1e0..10e1636 100644
--- a/lisc/parse.c
+++ b/lisc/parse.c
@@ -814,6 +814,7 @@ printfn(Fn *fn, FILE *f)
 	};
 	static char prcls[NOp] = {
 		[OArg] = 1,
+		[OSwap] = 1,
 		[OXCmp] = 1,
 		[OXTest] = 1,
 		[OXPush] = 1,