diff -ru libdvdread-4.1.3/src/ifo_read.c libdvdread-4.1.3-t/src/ifo_read.c
--- libdvdread-4.1.3/src/ifo_read.c	2008-09-06 15:55:51.000000000 -0600
+++ libdvdread-4.1.3-t/src/ifo_read.c	2011-11-23 15:01:31.000000000 -0700
@@ -843,10 +843,10 @@
 
   /* verify time (look at print_time) */
   for(i = 0; i < 8; i++)
-    if(!pgc->audio_control[i] & 0x8000) /* The 'is present' bit */
+    if(!(pgc->audio_control[i] & 0x8000)) /* The 'is present' bit */
       CHECK_ZERO(pgc->audio_control[i]);
   for(i = 0; i < 32; i++)
-    if(!pgc->subp_control[i] & 0x80000000) /* The 'is present' bit */
+    if(!(pgc->subp_control[i] & 0x80000000)) /* The 'is present' bit */
       CHECK_ZERO(pgc->subp_control[i]);
 
   /* Check that time is 0:0:0:0 also if nr_of_programs == 0 */
@@ -1027,7 +1027,12 @@
     ifoFree_TT_SRPT(ifofile);
     return 0;
   }
-
+	if( tt_srpt->nr_of_srpts>info_length/sizeof(title_info_t)){
+		fprintf(stderr,"libdvdread: data mismatch: info_length (%ld)!= nr_of_srpts (%d). Truncating.\n",
+		  info_length/sizeof(title_info_t),tt_srpt->nr_of_srpts);
+		tt_srpt->nr_of_srpts=info_length/sizeof(title_info_t);
+	}
+		 
   for(i =  0; i < tt_srpt->nr_of_srpts; i++) {
     B2N_16(tt_srpt->title[i].nr_of_ptts);
     B2N_16(tt_srpt->title[i].parental_id);