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-rw-r--r--examples/12.src2
1 files changed, 2 insertions, 0 deletions
diff --git a/examples/12.src b/examples/12.src
index 941682a..c54cfa7 100644
--- a/examples/12.src
+++ b/examples/12.src
@@ -1,3 +1,5 @@
+extern printf = (ptr, i64) => i64;
+
 let main = () => i64 {
     let factorial = (n: i64) => i64 {
         let f = (acc: i64, n: i64) => i64 {