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Fix regression of switching to new panic=immediate-abort flag #87

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Merged
johnthagen merged 1 commit into from
Oct 3, 2025
Merged

Fix regression of switching to new panic=immediate-abort flag #87

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2 changes: 1 addition & 1 deletion .github/workflows/build.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -76,4 +76,4 @@ jobs:
run: >
rustup component add rust-src;
RUSTFLAGS="-Zlocation-detail=none -Zfmt-debug=none" cargo +nightly build -Z build-std=std,panic_abort -Z build-std-features="optimize_for_size" --target x86_64-unknown-linux-gnu --release;
RUSTFLAGS="-Zunstable-options -Cpanic=immediate-abort" cargo +nightly build -Z build-std=std,panic_abort --target x86_64-unknown-linux-gnu --release;
RUSTFLAGS="-Zunstable-options -Cpanic=immediate-abort" cargo +nightly build -Z build-std=std,panic_abort -Z build-std-features= --target x86_64-unknown-linux-gnu --release;
7 changes: 5 additions & 2 deletions README.md
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Expand Up @@ -230,11 +230,14 @@ and formatting code in final binary by default.
has been merged into the `nightly` `rustc` compiler to address this.

To use this, repeat the instructions above to use `build-std`, but also pass
[`-Zunstable-options -Cpanic=immediate-abort`](https://doc.rust-lang.org/rustc/command-line-arguments.html#-z-set-unstable-options)
[`-Zunstable-options -Cpanic=immediate-abort`](https://doc.rust-lang.org/rustc/command-line-arguments.html#-z-set-unstable-options) and
[`-Z build-std-features=`](https://doc.rust-lang.org/cargo/reference/unstable.html#build-std-features) (which will disable the default `backtrace` and `panic-unwind` features)
to `rustc`.

```bash
$ RUSTFLAGS="-Zunstable-options -Cpanic=immediate-abort" cargo +nightly build -Z build-std=std,panic_abort \
$ RUSTFLAGS="-Zunstable-options -Cpanic=immediate-abort" cargo +nightly build \
-Z build-std=std,panic_abort \
-Z build-std-features= \
--target x86_64-apple-darwin --release
```

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