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Do not suggest compatible variants inside macro#142611

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xizheyin wants to merge 2 commits intorust-lang:mainfrom
xizheyin:142359
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Do not suggest compatible variants inside macro#142611
xizheyin wants to merge 2 commits intorust-lang:mainfrom
xizheyin:142359

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@xizheyin xizheyin commented Jun 17, 2025 •
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Fixes #142359

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@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 Jun 17, 2025
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BoxyUwU commented Jun 23, 2025 •
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The test doesn't seem to actually reproduce the issue that this fixes? It never suggested to modify std in the first commit. What's up with that

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xizheyin commented Jun 23, 2025

This may be because #139316 (comment).

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xizheyin commented Jul 15, 2025

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@rustbot rustbot assigned compiler-errors and unassigned BoxyUwU Jul 15, 2025
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compiler-errors suggested changes Jul 16, 2025
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@rustbot rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jul 16, 2025
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Add test suggest-compatible-variants-macro-issue-142359.rs
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Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>
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Do not suggest compatible variants inside macro
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Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>
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xizheyin commented Jul 20, 2025
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@rustbot ready

compiler/rustc_hir_typeck/src/fn_ctxt/suggestions.rs
Comment on lines 2423 to +2426
while let hir::ExprKind::Block(block, _) = &expr.kind
&& let Some(expr_) = &block.expr
// Only traverse blocks in same context
&& expr_.span.eq_ctxt(expr.span)
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This time, I find the deepest expression in the block tree while staying within the same context. This ensures that suggestions point to user-visible code.

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Jul 20, 2025
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fee1-dead commented Jul 25, 2025

your first commit hasn't even reproduced the issue, please make sure you can reproduce it before attempting a fix

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fee1-dead commented Jul 25, 2025

if the ui test environment doesn't provide std sources, then we need a configuration that does provide std sources to reproduce

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xizheyin commented Jul 28, 2025

I open #144585 to provide std sources in ui tests.

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jieyouxu commented Jul 28, 2025 •
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if the ui test environment doesn't provide std sources, then we need a configuration that does provide std sources to reproduce

Does this actually need std sources? Can you use an auxiliary such that to the main test, it would be considered e.g. from external macro? (As @estebank recommends in #131782 (comment))

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xizheyin commented Jul 28, 2025

I seem to have find the problem. The root of the problem seems to be the different implementations of span_note and span_help.

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compiler-errors commented Aug 14, 2025

r? jieyouxu

@rustbot rustbot assigned jieyouxu and unassigned compiler-errors Aug 14, 2025
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jieyouxu commented Aug 15, 2025

The regression test doesn't reproduce the regression yet so
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@rustbot rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Aug 15, 2025
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xizheyin commented Aug 16, 2025

Yeah, since #144585 hasn't been finalized yet, I'll reproduce it by defining extern crate in the UI test.

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Incorrect suggestion for incompatible match arm types

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