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-rw-r--r--src/rt/rust_test_helpers.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/rt/rust_test_helpers.c b/src/rt/rust_test_helpers.c
index 00bfa63e6fe..d2ebdcca80c 100644
--- a/src/rt/rust_test_helpers.c
+++ b/src/rt/rust_test_helpers.c
@@ -243,3 +243,7 @@ double rust_interesting_average(uint64_t n, ...) {
     va_end(pairs);
     return sum / n;
 }
+
+int32_t rust_int8_to_int32(int8_t x) {
+    return (int32_t)x;
+}