address/leak sanitizer, somebody?

[Samuel Thibault]

Hello,

For work I've been having a look at -fsanitize in gcc.  It's not as
powerful as valgrind, but it should provide very good feedback, and
apart from tsan, it seems to be very easy to port to other systems
(basically tell the ucontext layout, the rest is mostly glibc-generic
actually), could somebody have a look?

Samuel