Short backtrace

[thewh1teagle]

I have large codebase which uses anyhow::{Result, Context, bail} a lot, and the errors don't tell much. No filename/line numbers at all. Using RUST_BACKTRACE=1 is not convenient.

I found https://github.com/dtolnay/anyhow/issues/22 but it will require many changes to add it everywhere. Is there an elegant way to get short backtrace when error occur, just like we get it with unwrap()?

Example:

use anyhow::{Result, bail};

fn main() -> Result<()>  {
    job()
}

fn job() -> Result<()> {
    bail!("error in job")
}

cargo run
Error: error in job

Imagine large codebase with many errors coming from internal libraries... no idea where it happens.

Thanks

[bjorn3]

You can call .backtrace() on the error value to get a backtrace you can print if RUST_BACKTRACE=1 or RUST_LIB_BACKTRACE=1 is used.

[0x241F31]

You can call .backtrace() on the error value to get a backtrace you can print if RUST_BACKTRACE=1 or RUST_LIB_BACKTRACE=1 is used.

it used Rust std::backtrace, so there is no direct access to frames, only std::fmt::Debug which is verbose