mirror of
https://git.FreeBSD.org/ports.git
synced 2024-11-15 23:50:44 +00:00
16 lines
807 B
Plaintext
16 lines
807 B
Plaintext
Electric Fence is a different kind of malloc() debugger. It uses the virtual
|
|
memory hardware of your system to detect when software overruns the boundaries
|
|
of a malloc() buffer. It will also detect any accesses of memory that has
|
|
been released by free(). Because it uses the VM hardware for detection,
|
|
Electric Fence stops your program on the first instruction that causes
|
|
a bounds violation. It's then trivial to use a debugger to display the
|
|
offending statement.
|
|
|
|
It will probably port to any ANSI/POSIX system that provides mmap(), and
|
|
mprotect(), as long as mprotect() has the capability to turn off all access
|
|
to a memory page, and mmap() can use /dev/zero or the MAP_ANONYMOUS flag
|
|
to create virtual memory pages.
|
|
|
|
Complete information on the use of Electric Fence is in the manual page
|
|
libefence.3 .
|