checkRef         61534 ext/sqlite3/libsqlite/sqlite3.c     if( checkRef(pCheck, iPage) ) break;
checkRef         61559 ext/sqlite3/libsqlite/sqlite3.c           checkRef(pCheck, iFreePage);
checkRef         61678 ext/sqlite3/libsqlite/sqlite3.c   if( checkRef(pCheck, iPage) ) return 0;