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Exit nonzero on rustc -Wall - #92504
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rust-highfive
commented
Jan 2, 2022
r? @jackh726 (rust-highfive has picked a reviewer for you, use r? to override) |
Seems reasonable to me; returning non-zero on an unknown command-line option seems like the correct behavior, as long as that option isn't something ignored for compatibility purposes (which this isn't). For some reason, I'm remembering a past incarnation of an issue very much like this, though I don't remember the details. Do you recall a previous issue about the exit code of |
dtolnay
commented
Jan 3, 2022
I do not. |
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You can use rustc_errors::FatalError.raise(); instead. This is what early_error() uses too.
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Nice! That works. I've updated the PR.
jackh726
commented
Jan 6, 2022
r=me with commits squashed |
dtolnay
commented
Jan 6, 2022
@bors r=jackh726 |
bors
commented
Jan 6, 2022
📌 Commit 7174ec2 has been approved by |
jackh726
commented
Jan 6, 2022
@bors rollup |
…askrgr Rollup of 8 pull requests Successful merges: - rust-lang#91055 (return the correct type for closures in `type_of`) - rust-lang#92207 (Delay remaining `span_bug`s in drop elaboration) - rust-lang#92417 (Fix spacing and ordering of words in pretty printed Impl) - rust-lang#92504 (Exit nonzero on rustc -Wall) - rust-lang#92559 (RustWrapper: adapt to new AttributeMask API) - rust-lang#92589 (Break the loop) - rust-lang#92607 (rustc_metadata: Some minor cleanups and optimizations) - rust-lang#92620 (Remove unused `ExtendDefault` struct) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
Previously
rustc -Wall /dev/nullwould print a paragraph explaining that-Wallis not a thing in Rust, but would then exit 0. I believe exiting 0 is not the right behavior. For something likerustc --versionorrustc --helporrustc -C helpthe user is requesting rustc to print some information; rustc prints that information and exits 0 because what the user requested has been accomplished. In the case ofrustc -Wall path/to/main.rs, I don't find it correct to conceptualize this as "the user requested rustc to print information about the fact that Wall doesn't exist". The user requested a particular thing, and despite rustc knowing what they probably meant and informing them about that, the thing they requested has not been accomplished. Thus a nonzero exit code is needed.