old_tree         2525 maint/gnulib/lib/regcomp.c   bin_tree_t *tree = NULL, *old_tree = NULL;
old_tree         2621 maint/gnulib/lib/regcomp.c       old_tree = tree;
old_tree         2624 maint/gnulib/lib/regcomp.c     old_tree = NULL;
old_tree         2653 maint/gnulib/lib/regcomp.c   if (old_tree)
old_tree         2654 maint/gnulib/lib/regcomp.c     tree = create_tree (dfa, old_tree, tree, CONCAT);