(main): Handle argc == 0.

diff --git a/src/expr.c b/src/expr.c
index ea4b16e..d4067cf 100644 (file)
--- a/src/expr.c
+++ b/src/expr.c
@@ -173,7 +173,7 @@ main (int argc, char **argv)
       ++argv;
     }
 
-  if (argc == 1)
+  if (argc <= 1)
     {
       error (0, 0, _("too few arguments"));
       usage (EXIT_FAILURE);