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DEVELOPMENT.md: mention nightly requirement for code coverage #9919

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sylvestre merged 1 commit into from
Dec 30, 2025
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DEVELOPMENT.md: mention nightly requirement for code coverage #9919

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1 change: 1 addition & 0 deletions DEVELOPMENT.md
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Expand Up @@ -262,6 +262,7 @@ To generate [gcov-based](https://github.com/mozilla/grcov#example-how-to-generat
export CARGO_INCREMENTAL=0
export RUSTFLAGS="-Cinstrument-coverage -Ccodegen-units=1 -Copt-level=0 -Clink-dead-code -Coverflow-checks=off -Zpanic_abort_tests -Cpanic=abort"
export RUSTDOCFLAGS="-Cpanic=abort"
export RUSTUP_TOOLCHAIN="nightly"
cargo build <options...> # e.g., --features feat_os_unix
cargo test <options...> # e.g., --features feat_os_unix test_pathchk
grcov . -s . --binary-path ./target/debug/ -t html --branch --ignore-not-existing --ignore build.rs --excl-br-line "^\s*((debug_)?assert(_eq|_ne)?\#\[derive\()" -o ./target/debug/coverage/
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