--- /dev/null
+++ dyld/dyld-519.2.2/unit-tests/test-cases/interpose-basic-prebound/foo.c
@@ -0,0 +1,12 @@
+
+#include <stdbool.h>
+#include <string.h>
+
+bool check_dylib_interposing()
+{
+	const char* x = strdup("123");
+	const char* y = strdup("456");
+  
+	return ( (strcmp(x, "hello") == 0) && (strcmp(y, "hello") == 0) );
+}
+