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Revert "Drop conditionally applied cargo -Zon-broken-pipe=kill flags"

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This reverts commit 5a7058c5a5.

In [#131059] we found out that `-Zon-broken-pipe=kill` is actually
**load-bearing** [1] for (at least) `rustc` and `rustdoc` to have the
kill-process-on-broken-pipe behavior, e.g. `rustc --print=sysroot |
false` will ICE and `rustdoc --print=sysroot | false` will panic on a
broken pipe.

[#131059]: https://github.com/rust-lang/rust/issues/131059
[1]: https://github.com/rust-lang/rust/issues/131059#issuecomment-2385822033
This commit is contained in:
许杰友 Jieyou Xu (Joe) 2024-10-01 18:35:26 +00:00
parent 07f08ffb2d
commit 1c7e8246d5
2 changed files with 11 additions and 4 deletions
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4
src/bootstrap/src/core/build_steps/compile.rs
View File

@ -1053,6 +1053,10 @@ pub fn rustc_cargo(
cargo.rustdocflag("-Zcrate-attr=warn(rust_2018_idioms)");
// If the rustc output is piped to e.g. `head -n1` we want the process to be
// killed, rather than having an error bubble up and cause a panic.
cargo.rustflag("-Zon-broken-pipe=kill");
if builder.config.llvm_enzyme {
cargo.rustflag("-l").rustflag("Enzyme-19");
}

11
src/bootstrap/src/core/build_steps/tool.rs
View File

@ -200,10 +200,6 @@ pub fn prepare_tool_cargo(
cargo.arg("--features").arg(features.join(", "));
}
// Warning: be very careful with RUSTFLAGS or command-line options, as conditionally applied
// RUSTFLAGS or cli flags can lead to hard-to-diagnose rebuilds due to flag differences, causing
// previous tool build artifacts to get invalidated.
// Enable internal lints for clippy and rustdoc
// NOTE: this doesn't enable lints for any other tools unless they explicitly add `#![warn(rustc::internal)]`
// See https://github.com/rust-lang/rust/pull/80573#issuecomment-754010776
@ -213,6 +209,13 @@ pub fn prepare_tool_cargo(
// See https://github.com/rust-lang/rust/issues/116538
cargo.rustflag("-Zunstable-options");
// `-Zon-broken-pipe=kill` breaks cargo tests
if !path.ends_with("cargo") {
// If the output is piped to e.g. `head -n1` we want the process to be killed,
// rather than having an error bubble up and cause a panic.
cargo.rustflag("-Zon-broken-pipe=kill");
}
cargo
}