In the last episode (Apr 10), Ted Unangst said: > On Fri, 9 Apr 2004, Brandon Erhart wrote: > > Are there any debuggers out there for BSD that will detect the > > heap/stack corruption!? > > valgrind and electric fence are very good suggestions. my own > personal pet project was adding guard pages to the system malloc. > then linking malloc.conf -> AFGJ or setenv MALLOC_OPTIONS and you can > find bugs in all the software you run. it's less complete than a > dedicated heap checker, but lightweight enough (well, 20% penalty may > not be light for some) that i run with it full time. we've had a > fairly significant amount of success with it finding bugs in software > that just happened to work. > > http://www.zeitbombe.org/patches/malloc_guard.diff should apply pretty > cleanly to freebsd's malloc.c
I also have a malloc debugging patch that changes the Junk flag to fill with a counter value, so you can track down where in your program a particular block of memory was allocated/freed. http://dan.allantgroup.com/FreeBSD/malloc.diff , or PR 52907 -- Dan Nelson [EMAIL PROTECTED] _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
