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Compilation succeeds even if there is #[inline] in the structure field. #80564

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Danue1 opened this issue Dec 31, 2020 · 3 comments
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Compilation succeeds even if there is #[inline] in the structure field. #80564

Danue1 opened this issue Dec 31, 2020 · 3 comments
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A-attributes Area: #[attributes(..)] C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@Danue1
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Danue1 commented Dec 31, 2020

I tried this code:

struct Foo {
    #[inline]
    bar: String,
}

I expected to see this happen: Failing complilation.

Instead, this happened: Compilation success.

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rustc --version --verbose:

rustc 1.49.0-beta.4 (877c7cbe1 2020-12-10)
binary: rustc
commit-hash: 877c7cbe142a373f93d38a23741dcc3a0a17a2af
commit-date: 2020-12-10
host: x86_64-apple-darwin
release: 1.49.0-beta.4
@Danue1 Danue1 added the C-bug Category: This is a bug. label Dec 31, 2020
@ehuss
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ehuss commented Dec 31, 2020

Some validation was added in #73461, but it looks like there are a few places that are missing. The ones I can see are struct fields, match arms, and macro definitions:

struct Foo {
    #[inline]
    bar: String,
}

match foo {
    #[inline]
    _ => {}
}

#[inline]
macro_rules! foo {
    () => {};
}

I believe that CheckAttrVisitor needs to include visitor methods for visit_arm and visit_struct_field and visit_macro_def.

@camelid camelid added A-attributes Area: #[attributes(..)] T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Jan 1, 2021
@Danue1
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Danue1 commented Jan 2, 2021

Hmm, I think I can do it, so I'll try it.

bors added a commit to rust-lang-ci/rust that referenced this issue Feb 1, 2021
@Danue1
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Danue1 commented Feb 2, 2021

solved!

@Danue1 Danue1 closed this as completed Feb 2, 2021
github-actions bot pushed a commit to rust-lang/glacier that referenced this issue May 10, 2022
=== stdout ===
=== stderr ===
warning: `#[track_caller]` is ignored on struct fields, match arms and macro defs
 --> /home/runner/work/glacier/glacier/ices/95151.rs:1:1
  |
1 | #[track_caller]
  | ^^^^^^^^^^^^^^^
  |
  = note: `#[warn(unused_attributes)]` on by default
  = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
  = note: see issue #80564 <rust-lang/rust#80564> for more information

warning: 1 warning emitted

==============
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Labels
A-attributes Area: #[attributes(..)] C-bug Category: This is a bug. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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