[tialaramex]

In my obviously biased opinion, very specialised, but sometimes exactly what you needed (I have used this in anger maybe 2-3 times in my career since then, which is why I wrote the C version):

https://github.com/tialaramex/leakdice (or https://github.com/tialaramex/leakdice-rust)

Leakdice implements some of Raymond Chen's "The poor man’s way of identifying memory leaks" for you. On Linux at least.

https://bytepointer.com/resources/old_new_thing/20050815_224...

All leakdice does is: You pick a running process which you own, leakdice picks a random heap page belonging to that process and shows you that page as hex + ASCII.

The Raymond Chen article explains why you might ever want to do this.