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Fixes #115402

The span in the error reporting always points to the dst, this is an old issue, I may open another PR to fix it.

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rustbot commented Sep 4, 2023

r? @wesleywiser

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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 Sep 4, 2023
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r=me after fixing wording

@@ -2920,6 +2920,12 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
rustc_transmute::Reason::DstIsTooBig => {
format!("The size of `{src}` is smaller than the size of `{dst}`")
}
rustc_transmute::Reason::SrcSizeOverflow => {
format!("the size of `{src}` is overflow")
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Can you make this more like LayoutError::SizeOverflow?

Suggested change
format!("the size of `{src}` is overflow")
format!("values of the type `{src}` are too big for the current architecture")

Same for dst.

@chenyukang chenyukang force-pushed the yukang-fix-115402-overflowsize branch from 559a4a0 to 00010ed Compare September 5, 2023 22:48
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@bors r=compiler-errors

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bors commented Sep 5, 2023

📌 Commit 00010ed has been approved by compiler-errors

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 Sep 5, 2023
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bors commented Sep 6, 2023

⌛ Testing commit 00010ed with merge aeddd2d...

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bors commented Sep 6, 2023

☀️ Test successful - checks-actions
Approved by: compiler-errors
Pushing aeddd2d to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Sep 6, 2023
@bors bors merged commit aeddd2d into rust-lang:master Sep 6, 2023
@rustbot rustbot added this to the 1.74.0 milestone Sep 6, 2023
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Finished benchmarking commit (aeddd2d): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
0.5% [0.5%, 0.5%] 1
Regressions ❌
(secondary)
2.1% [1.4%, 3.0%] 5
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) 0.5% [0.5%, 0.5%] 1

Cycles

This benchmark run did not return any relevant results for this metric.

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 628.843s -> 628.436s (-0.06%)
Artifact size: 316.24 MiB -> 316.30 MiB (0.02%)

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Successfully merging this pull request may close these issues.

ICE: not implemented: SizeOverflow([u8; usize::MAX])
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