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Fix diagnostic when using = instead of : in let binding #136869

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merged 1 commit into from
Feb 14, 2025

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Fixes #133713

r? @estebank

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Feb 11, 2025
Comment on lines 2376 to 2380
if err.code == Some(E0423)
&& let Some((let_span, _, _)) = self.diag_metadata.current_let_binding
&& let span = let_span.shrink_to_hi().to(ident_span.shrink_to_lo())
&& let Ok(code) = self.r.tcx.sess.source_map().span_to_snippet(span)
&& code.trim() == "="
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Is there no alternative way of doing this? We don't have info on the expression/AST node? Wouldn't self.diag_metadata.current_let_binding.2 point at the space after the =, which could be compared against the span you already have?

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you means checking the ident_span is starting point of current_let_binding.2.span?
I updated the code.

@chenyukang chenyukang force-pushed the yukang-fix-133713-let-binding branch from fc05d76 to 86548fc Compare February 12, 2025 01:36
@chenyukang chenyukang force-pushed the yukang-fix-133713-let-binding branch from 86548fc to a917fd5 Compare February 12, 2025 01:56
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@bors r+

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bors commented Feb 13, 2025

📌 Commit a917fd5 has been approved by estebank

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Feb 13, 2025
workingjubilee added a commit to workingjubilee/rustc that referenced this pull request Feb 14, 2025
…inding, r=estebank

Fix diagnostic when using = instead of : in let binding

Fixes rust-lang#133713

r? `@estebank`
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sequences with another PR

@bors p=1

bors added a commit to rust-lang-ci/rust that referenced this pull request Feb 14, 2025
…kingjubilee

Rollup of 11 pull requests

Successful merges:

 - rust-lang#136863 (rework rigid alias handling )
 - rust-lang#136869 (Fix diagnostic when using = instead of : in let binding)
 - rust-lang#136895 (debuginfo: Set bitwidth appropriately in enum variant tags)
 - rust-lang#136928 (eagerly prove WF when resolving fully qualified paths)
 - rust-lang#136941 (Move `llvm.ccache` to `build.ccache`)
 - rust-lang#136950 (rustdoc: use better, consistent SVG icons for scraped examples)
 - rust-lang#136957 (coverage: Eliminate more counters by giving them to unreachable nodes)
 - rust-lang#136960 (Compiletest should not inherit all host RUSTFLAGS)
 - rust-lang#136962 (unify LLVM version finding logic)
 - rust-lang#136970 (ci: move `x86_64-gnu-debug` job to the free runner)
 - rust-lang#136973 (Fix `x test --stage 1 ui-fulldeps` on macOS (until the next beta bump))

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit d784803 into rust-lang:master Feb 14, 2025
6 checks passed
@rustbot rustbot added this to the 1.86.0 milestone Feb 14, 2025
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Feb 14, 2025
Rollup merge of rust-lang#136869 - chenyukang:yukang-fix-133713-let-binding, r=estebank

Fix diagnostic when using = instead of : in let binding

Fixes rust-lang#133713

r? ``@estebank``
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Poor diagnostic when using = instead of : in let bindings
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