changes for PATH being the empty string; more minor asan fixes

builtins/cd.def

@@ -1,7 +1,7 @@
 This file is cd.def, from which is created cd.c.  It implements the
 builtins "cd" and "pwd" in Bash.
 
-Copyright (C) 1987-2022 Free Software Foundation, Inc.
+Copyright (C) 1987-2023 Free Software Foundation, Inc.
 
 This file is part of GNU Bash, the Bourne Again SHell.
 
@@ -390,20 +390,6 @@ cd_builtin (WORD_LIST *list)
 	  else
 	    free (temp);
 	}
-
-#if 0
-      /* changed for bash-4.2 Posix cd description steps 5-6 */
-      /* POSIX.2 says that if `.' does not appear in $CDPATH, we don't
-	 try the current directory, so we just punt now with an error
-	 message if POSIXLY_CORRECT is non-zero.  The check for cdpath[0]
-	 is so we don't mistakenly treat a CDPATH value of "" as not
-	 specifying the current directory. */
-      if (posixly_correct && cdpath[0])
-	{
-	  builtin_error ("%s: %s", dirname, strerror (ENOENT));
-	  return (EXECUTION_FAILURE);
-	}
-#endif
     }
   else
     dirname = list->word->word;

builtins/enable.def

@@ -336,7 +336,7 @@ dyn_load_builtin (WORD_LIST *list, int flags, char *filename)
   handle = 0;
   if (absolute_program (filename) == 0)
     {
-      loadables_path = get_string_value ("BASH_LOADABLES_PATH");
+      loadables_path = path_value ("BASH_LOADABLES_PATH", 1);
       if (loadables_path)
 	{
 	  load_path = find_in_path (filename, loadables_path, FS_NODIRS|FS_EXEC_PREFERRED);