vdbeMergeEngineStep 79783 ext/sqlite3/libsqlite/sqlite3.c     rc = vdbeMergeEngineStep(pIncr->pMerger, &dummy);
vdbeMergeEngineStep 80516 ext/sqlite3/libsqlite/sqlite3.c       rc = vdbeMergeEngineStep(pSorter->pMerger, pbEof);