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b5c7a55250
- Document `allow-non-lint-warnings.rs`
- Move `allow-non-lint-warnings.rs` under `tests/ui/diagnostic-flags/`
- Improve the test to use two *differential* revisions:
1. One revision checks that without `-A warnings` the code sample
actually emits a warning.
2. The other revision checks that `-A warnings` suppresses the
warning.
This makes sure that if the code sample no longer warns, the test
doesn't silently pass but fail to check its intended purpose.
28 lines
1.2 KiB
Rust
28 lines
1.2 KiB
Rust
// ignore-tidy-linelength
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//! Check that `-A warnings` cli flag applies to non-lint warnings as well.
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//!
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//! This test tries to exercise that by checking that the "relaxing a default bound only does
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//! something for `?Sized`; all other traits are not bound by default" non-lint warning (normally
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//! warn-by-default) is suppressed if the `-A warnings` cli flag is passed.
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//!
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//! Take special note that `warnings` is a special pseudo lint group in relationship to non-lint
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//! warnings, which is somewhat special. This test does not exercise other `-A <other_lint_group>`
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//! that check that they are working in the same way, only `warnings` specifically.
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//!
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//! # Relevant context
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//!
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//! - Original impl PR: <https://github.com/rust-lang/rust/pull/21248>.
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//! - RFC 507 "Release channels":
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//! <https://github.com/rust-lang/rfcs/blob/c017755b9bfa0421570d92ba38082302e0f3ad4f/text/0507-release-channels.md>.
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#![crate_type = "lib"]
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//@ revisions: without_flag with_flag
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//@[with_flag] compile-flags: -Awarnings
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//@ check-pass
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pub trait Trait {}
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pub fn f<T: ?Trait>() {}
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//[without_flag]~^ WARN relaxing a default bound only does something for `?Sized`; all other traits are not bound by default
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