Author: rathann Date: Thu Oct 3 23:57:48 2013 New Revision: 1258 Log: If the start offset points past the last_byte (outside the region read) stop reading PTTs and adjust nr_of_srpts. Fixes Transformers 3 and Cars 2. Patch by John Stebbins ^stebbins*jetheaddev+com/ Modified: trunk/libdvdread/src/ifo_read.c Modified: trunk/libdvdread/src/ifo_read.c ============================================================================== --- trunk/libdvdread/src/ifo_read.c Sun Apr 28 21:10:07 2013 (r1257) +++ trunk/libdvdread/src/ifo_read.c Thu Oct 3 23:57:48 2013 (r1258) @@ -1185,7 +1185,15 @@ int ifoRead_VTS_PTT_SRPT(ifo_handle_t *i goto fail; } for(i = 0; i < vts_ptt_srpt->nr_of_srpts; i++) { - B2N_32(data[i]); + /* Transformers 3 has PTT start bytes that point outside the SRPT PTT */ + uint32_t start = data[i]; + B2N_32(start); + if(start + sizeof(ptt_info_t) > vts_ptt_srpt->last_byte + 1) { + /* don't mess with any bytes beyond the end of the allocation */ + vts_ptt_srpt->nr_of_srpts = i; + break; + } + data[i] = start; /* assert(data[i] + sizeof(ptt_info_t) <= vts_ptt_srpt->last_byte + 1); Magic Knight Rayearth Daybreak is mastered very strange and has Titles with 0 PTTs. They all have a data[i] offsets beyond the end of