Original report by René Bertin (Bitbucket: RJVB, GitHub: RJVB).
I have a couple of logfiles that cause a crash in XxHordiffImp::boundsHordiff2() line 248 (if ( ignoreWs && isspace( c[i] ) ) (with i==0). A quick look with a debugger suggests that pr[i] contains an invalid address (the debugger balks when I try to print *pr[i]).