Cast bash-generated argv from char ** to const char ** so it would be of the same
type argv was declared
https://bugs.gentoo.org/941542
--- a/bash/testrec.c
+++ b/bash/testrec.c
@@ -60,7 +60,7 @@
 
   /* Get arguments and verify them.  */
 
-  argv = make_builtin_argv (list, &argc);
+  argv = (const char**)make_builtin_argv (list, &argc);
   if ((argc != 3)
       || ((strcmp (argv[0], "[%") == 0) && ((strlen (argv[2]) == 2) && ((argv[2][0] != '%') || (argv[2][1] != ']')))))
     {