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#[doc = compile_error!()] no longer emits a clean error #153930
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A-attributesArea: Attributes (`#[…]`, `#![…]`)Area: Attributes (`#[…]`, `#![…]`)C-bugCategory: This is a bug.Category: This is a bug.P-mediumMedium priorityMedium priorityT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.T-rustdocRelevant to the rustdoc team, which will review and decide on the PR/issue.Relevant to the rustdoc team, which will review and decide on the PR/issue.regression-from-stable-to-stablePerformance or correctness regression from one stable version to another.Performance or correctness regression from one stable version to another.
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A-attributesArea: Attributes (`#[…]`, `#![…]`)Area: Attributes (`#[…]`, `#![…]`)C-bugCategory: This is a bug.Category: This is a bug.P-mediumMedium priorityMedium priorityT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.T-rustdocRelevant to the rustdoc team, which will review and decide on the PR/issue.Relevant to the rustdoc team, which will review and decide on the PR/issue.regression-from-stable-to-stablePerformance or correctness regression from one stable version to another.Performance or correctness regression from one stable version to another.
The following code used to only emit one error (the message passed to
compile_error!()) on Rust 1.93, but on Rust 1.94, it emits both the given message and an unhelpful "attribute value must be a literal".Godbolt link.
I use this in
doctest-fileto produce errors in a macro meant to be used in#[doc = …]position.@rustbot modify labels: +regression-from-stable-to-stable -regression-untriaged