Make strlen() assertions more explicit

diff --git a/colorize.c b/colorize.c
index 49879c5db6de0c2450af5b6b0179b4cf3c3fd4f7..0cf44cb310efebb3d17e5c8756b272622f427ade 100644 (file)
--- a/colorize.c
+++ b/colorize.c
@@ -1448,8 +1448,8 @@ has_color_name (const char *str, const char *name)
 {
     char *p;
 
-    assert (strlen (str));
-    assert (strlen (name));
+    assert (strlen (str) > 0);
+    assert (strlen (name) > 0);
 
     if (!(*str == *name || *str == toupper (*name)))
       return false;