diff --git a/test/CFrontend/2004-02-13-IllegalVararg.c.tr b/test/CFrontend/2004-02-13-IllegalVararg.c.tr
new file mode 100644
index 00000000000..1f3eded0cdc
--- /dev/null
+++ b/test/CFrontend/2004-02-13-IllegalVararg.c.tr
@@ -0,0 +1,11 @@
+// RUN: %llvmgcc -xc %s -c -o - | llc
+
+#include <stdarg.h>
+
+float test(int X, ...) {
+  va_list ap;
+  float F;
+  va_start(ap, X);
+  F = va_arg(ap, float);
+  return F;
+}