csplit: port to IDX_MAX < INT_MAX

* src/csplit.c (max_out): Defend against unlikely IDX_MAX < INT_MAX.

diff --git a/src/csplit.c b/src/csplit.c
index 51bb38549ade0f2ddf55c1236686807a18e0b722..babb73949dd39967efa83648332b407f9fffcb83 100644 (file)
--- a/src/csplit.c
+++ b/src/csplit.c
@@ -1275,7 +1275,7 @@ max_out (char *format)
            _("missing %% conversion specification in suffix"));
 
   int maxlen = snprintf (nullptr, 0, format, INT_MAX);
-  if (maxlen < 0)
+  if (! (0 <= maxlen && maxlen <= IDX_MAX))
     xalloc_die ();
   return maxlen;
 }