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Capture wasm backtraces for gas traces #439

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Kubuxu opened this issue Apr 1, 2022 · 1 comment

Kubuxu commented Apr 1, 2022

Go today provides backtraces for gas charging points which is useful for debugging and gas performance evaluations.

Unfortunately, it looks like it is impossible today for WASM and Rust:
https://github.com/rust-lang/backtrace-rs/blob/38cb2d5562a3d1b3a66bc21360d91275ea55cc0a/src/lib.rs#L75-L76

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Kubuxu commented Apr 27, 2022

It is possible by capturing the traces within syscall (in Rust-land), if WASM is built with symbols, the backtrace should resolve.

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