- printf ("#define %s_CHECK(t)\tTREE_CHECK (t, %s)\n",
- tree_codes[i], tree_codes[i]);
+ for (j = 0; j < i; j++)
+ if (strcmp (tree_codes[i], tree_codes[j]) == 0)
+ break;
+
+ if (i == j)
+ printf ("#define %s_CHECK(t)\tTREE_CHECK (t, %s)\n",
+ tree_codes[i], tree_codes[i]);