#include "builtin.h"
+#include "cache.h"
 #include "attr.h"
 #include "quote.h"
 
        struct git_attr_check *check;
        int cnt, i, doubledash;
 
+       if (read_cache() < 0) {
+               die("invalid cache");
+       }
+
        doubledash = -1;
        for (i = 1; doubledash < 0 && i < argc; i++) {
                if (!strcmp(argv[i], "--"))
                if (git_checkattr(argv[i], cnt, check))
                        die("git_checkattr died");
                for (j = 0; j < cnt; j++) {
-                       void *value = check[j].value;
+                       const char *value = check[j].value;
 
                        if (ATTR_TRUE(value))
                                value = "set";
                                value = "unspecified";
 
                        write_name_quoted("", 0, argv[i], 1, stdout);
-                       printf(": %s: %s\n", argv[j+1], (char *) value);
+                       printf(": %s: %s\n", argv[j+1], value);
                }
        }
        return 0;