Eliminate 'GC_DEBUG redefined' compiler warning in smashtest

* tests/smash_test.c (GC_DEBUG): Do not define if already done.

diff --git a/tests/smash_test.c b/tests/smash_test.c
index d591ca2..4ba7be0 100644 (file)
--- a/tests/smash_test.c
+++ b/tests/smash_test.c
@@ -1,7 +1,9 @@
-/*
- * Test that overwrite error detection works reasonably.
- */
-#define GC_DEBUG
+/* Test that overwrite error detection works reasonably.        */
+
+#ifndef GC_DEBUG
+# define GC_DEBUG
+#endif
+
 #include "gc.h"
 
 #include <stdio.h>