4660                         if ( last && trietype ) {
4661                             if ( trietype != NOTHING ) {
4662                                 /* the last branch of the sequence was part of
4663                                  * a trie, so we have to construct it here
4664                                  * outside of the loop */
4665                                 made= make_trie( pRExC_state, startbranch,
4666                                                  first, scan, tail, count,
4667                                                  trietype, depth+1 );
4668 #ifdef TRIE_STUDY_OPT
4669                                 if ( ((made == MADE_EXACT_TRIE &&
4670                                      startbranch == first)
4671                                      || ( first_non_open == first )) &&
4672                                      depth==0 ) {
4673                                     flags |= SCF_TRIE_RESTUDY;