UNB/ CS/ David Bremner/ tags/ cs2023/ valgrind

This feed contains pages with tag "valgrind".

Getting started.

copy the files from /fcs/courses/cs2023/tutorial4 to some directory underneath your home directory.

Valgrind and dynamic array overflow

  • compile heapover.c with

    gcc -o heapover -g heapover.c

  • run it.

  • now run it with

    valgrind ./heapover

  • finally run it with

    valgrind --db-attach=yes ./heapover

  • repeat these steps with shadow.c. What do you observe about the ability of valgrind to localize uninitialized variable use, compared to illegal writes?

GCC stack protector

  • compile stackover.c with

    gcc -o stackover -g stackover.c

  • run it.

  • now compile with

    gcc -o stackover -g -fstack-protector-all stackover.c

  • run it again

Posted Tue 20 Oct 2009 08:30:00 AM ADT Tags: