Use the MAX_RENAMES_DIGITS define in the relevant snprintf().

diff --git a/util.c b/util.c
index 0887e7f..632a242 100644 (file)
--- a/util.c
+++ b/util.c
@@ -359,7 +359,7 @@ int robust_unlink(const char *fname)
        /* start where the last one left off to reduce chance of clashes */
        start = counter;
        do {
-               snprintf(&path[pos], 4, "%03d", counter);
+               snprintf(&path[pos], MAX_RENAMES_DIGITS+1, "%03d", counter);
                if (++counter >= MAX_RENAMES)
                        counter = 1;
        } while ((rc = access(path, 0)) == 0 && counter != start);