feat: implement va_arg()

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/variadic_functions.sh b/tests/variadic_functions.sh
index 4f899ee..155fc1a 100644
--- a/tests/variadic_functions.sh
+++ b/tests/variadic_functions.sh
@@ -29,3 +29,23 @@ int main() {
     return 0;
 }
 EOF
+
+test_exit_code 0 <<'EOF'
+#include <stdarg.h>
+#include <helpers.h>
+
+int sum(int n, ...) {
+    va_list args;
+    va_start(args, n);
+    int s = 0;
+    for (int i = 0; i < n; ++i) {
+        s += va_arg(args, int);
+    }
+    va_end(args);
+    return s;
+}
+
+int main() {
+    ASSERT_EQ(400, sum(5, 100, 90, 80, 70, 60));
+}
+EOF