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97311a8969
This needs more time to bake before we turn it on. Turning it on early risks people silencing the warning indefinitely, before we have the chance to make it less noisy.
41 lines
1.4 KiB
Rust
41 lines
1.4 KiB
Rust
// Ensure that rust-lld is used as the default linker on `x86_64-unknown-linux-gnu` on the nightly
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// channel, and that it can also be turned off with a CLI flag.
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//@ needs-rust-lld
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//@ ignore-beta
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//@ ignore-stable
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//@ only-x86_64-unknown-linux-gnu
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use run_make_support::regex::Regex;
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use run_make_support::rustc;
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fn main() {
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// A regular compilation should use rust-lld by default. We'll check that by asking the linker
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// to display its version number with a link-arg.
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let output = rustc().arg("-Wlinker-messages").link_arg("-Wl,-v").input("main.rs").run();
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assert!(
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find_lld_version_in_logs(output.stderr_utf8()),
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"the LLD version string should be present in the output logs:\n{}",
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output.stderr_utf8()
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);
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// But it can still be disabled by turning the linker feature off.
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let output = rustc()
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.arg("-Wlinker-messages")
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.link_arg("-Wl,-v")
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.arg("-Zlinker-features=-lld")
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.input("main.rs")
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.run();
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assert!(
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!find_lld_version_in_logs(output.stderr_utf8()),
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"the LLD version string should not be present in the output logs:\n{}",
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output.stderr_utf8()
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);
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}
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fn find_lld_version_in_logs(stderr: String) -> bool {
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let lld_version_re =
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Regex::new(r"^warning: linker stdout: LLD [0-9]+\.[0-9]+\.[0-9]+").unwrap();
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stderr.lines().any(|line| lld_version_re.is_match(line.trim()))
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}
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