Teach rustc-fake to tell the truth about subprocess exit statuses #1366
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yaahc
commented
Jul 23, 2022
|
nika has also suggested we may also want to make it so |
Mark-Simulacrum
approved these changes
Jul 23, 2022
eddyb
reviewed
Jul 23, 2022
Co-authored-by: Eduard-Mihai Burtescu <[email protected]>
Co-authored-by: Jane Losare-Lusby <[email protected]>
bors
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Jul 30, 2022
bump rustc-perf commit split off from rust-lang#99431 needed to access bugfix from rust-lang/rustc-perf#1366
RalfJung
reviewed
Aug 2, 2022
| @@ -467,8 +467,9 @@ fn process_self_profile_output(prof_out_dir: PathBuf, args: &[OsString]) { | |||
| #[cfg(windows)] | |||
| fn exec(cmd: &mut Command) { | |||
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FWIW using return type -> ! (like the Unix version) would have caught this
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Ahh I forgot that part when I posted @mystor's suggestion (#1366 (comment)).
Merged
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This resolves the ci failure observed in rust-lang/rust#99431
turns out the impl of
fn exec()in rustc-perf'srustc-fakeis incorrect on windows and only reports a failure when the subprocess fails to spawn, but if it spawns correctly it always reports success rather than checking the exit status of the subprocess. This causes the probe in anyhow to succeed and enable#[cfg(backtrace)]which then causes anyhow to fail to compile, but because it was inside ofrustc-fakeit reports success and continues! This happens quite a bit and we get some very exciting compiler errors whenRUST_LOG=collector=traceis set.