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Yuki Okushi
c5202b3779
Use `C-unwind` ABI for `__rust_start_panic` in `panic_abort` The function originally has `C` ABI but is called using `C-unwind` ABI in `std`: https://github.com/rust-lang/rust/blob/d4ad1cfc63ba5824196bfb2370451ddb5af2e020/library/std/src/panicking.rs#L49-L54 Which might be [problematic](https://github.com/rust-lang/miri/pull/1745#discussion_r596096876) and triggers this [Miri error](https://github.com/rust-lang/rust/issues/87778#issuecomment-893306222): ``` error: Undefined Behavior: calling a function with ABI C using caller ABI C-unwind --> /home/hyd-dev/.rustup/toolchains/miri/lib/rustlib/src/rust/library/std/src/panicking.rs:672:9 | 672 | __rust_start_panic(obj) | ^^^^^^^^^^^^^^^^^^^^^^^ calling a function with ABI C using caller ABI C-unwind | = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information ``` Changing the ABI of the function to `C-unwind` fixes the error above.