How to interpose drop handlers?

help
1

I would like to interpose all drop handlers in a Rust program. Specifically, I want to wrap the actual drop handler call with a prologue and an epilogue.

fn drop(&mut self) {
    prologue();
    real_drop(self); // The actual drop handler defined by the original code
    epilogue();
}

In my specific case the prologue would be incrementing a counter at a fixed memory address and the epilogue decrementing it.

I believe this requires rustc compiler change, and I'm ready to do so. Actually, I am already building the program with a custom rustc and LLVM toolchain.

I am grateful to any help. Thanks in advance.

2

This forum is about using Rust, not modifying it.

So you might have better luck on IRLO or Zulip. Let us know here if you cross-post.

3

Thank you for your suggestion.

I have re-posted in IRLO

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