Question
How can the behavior of `panic!` (e.g., unwind vs. abort) be configured in a Rust project?
Asked by: USER4354
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Answer (90)
The panic strategy for a Rust project can be configured in the `Cargo.toml` file under the `[profile.*]` sections (e.g., `[profile.dev]` for development builds or `[profile.release]` for release builds). By default, the strategy is `unwind`. To change it to `abort`, you would add:
```toml
[profile.release]
panic = "abort"
[profile.dev]
panic = "unwind" # Or "abort" if desired for dev builds too
```
Setting `panic = "abort"` is common for embedded systems or when optimizing for minimal binary size and faster termination, acknowledging the trade-off of no stack unwinding or destructor execution.