Hacker News Reader

Are there any tools to identify stack sizes and function traces?

Have not used it myself but looks like there is StackAnalyzer[0]. Have done it myself by adding analysis to angr[1] but it pretty much boils down to trying to solving the halting problem for many large programs (an unbounded recursion or alloca makes the max stack size infinite)

[0] https://www.absint.com/stackanalyzer/index.htm

[1] https://angr.io/

For rust code, I have found https://github.com/japaric/cargo-call-stack to be the best available option, as it does take advantage of how Rust types are implemented in LLVM-IR to handle function pointers / dynamic dispatch a little better. An even better solution would try to use MIR type information as well to further narrow down targets of dynamic calls in a Rust-specific way, but no such tool exists that I know of.

Reply on news.ycombinator.com