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Terse parse error on &raw expr #133231

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sadmac7000 opened this issue Nov 20, 2024 · 1 comment
Open

Terse parse error on &raw expr #133231

sadmac7000 opened this issue Nov 20, 2024 · 1 comment
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A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The parsing of Rust source code to an AST A-raw-pointers Area: raw pointers, MaybeUninit, NonNull D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. F-raw_ref_op `#![feature(raw_ref_op)]` T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@sadmac7000
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I tried this code:

mod foo {
    pub static A: i32 = 0;
    pub static B: i32 = 0;
    pub static C: i32 = 0;
}


fn main() {
    let _arr = [ &raw foo::A, &raw foo::B, &raw foo::C ];
}

I expected to see this happen: Code compiles normally

Instead, this happened: A parser error.

error: expected one of `!`, `,`, `.`, `::`, `;`, `?`, `]`, `{`, or an operator, found `foo`
 --> src/main.rs:9:23
  |
9 |     let _arr = [ &raw foo::A, &raw foo::B, &raw foo::C ];
  |                       ^^^ expected one of 9 possible tokens

Meta

rustc --version --verbose:

rustc 1.82.0 (f6e511eec 2024-10-15)
binary: rustc
commit-hash: f6e511eec7342f59a25f7c0534f1dbea00d01b14
commit-date: 2024-10-15
host: x86_64-unknown-linux-gnu
release: 1.82.0
LLVM version: 19.1.1
@sadmac7000 sadmac7000 added the C-bug Category: This is a bug. label Nov 20, 2024
@rustbot rustbot added the needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. label Nov 20, 2024
@fmease fmease added A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The parsing of Rust source code to an AST T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. A-raw-pointers Area: raw pointers, MaybeUninit, NonNull F-raw_ref_op `#![feature(raw_ref_op)]` and removed C-bug Category: This is a bug. needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. labels Nov 20, 2024
@fmease
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fmease commented Nov 20, 2024

The syntax is &raw const … / &raw mut …. The error message could be better (raw is a contextual keyword, that's why the parser doesn't give a good~okayish error message out of the box).

@fmease fmease changed the title [&raw foo::BAR] does not parse Terse parse error on &raw expr Nov 20, 2024
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Labels
A-diagnostics Area: Messages for errors, warnings, and lints A-parser Area: The parsing of Rust source code to an AST A-raw-pointers Area: raw pointers, MaybeUninit, NonNull D-terse Diagnostics: An error or lint that doesn't give enough information about the problem at hand. F-raw_ref_op `#![feature(raw_ref_op)]` T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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