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Auto merge of #115529 - chenyukang:yukang-fix-115402-overflowsize, r=compiler-errors

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Fix error report for size overflow from transmute

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.
This commit is contained in:
bors 2023-09-06 02:37:41 +00:00
commit aeddd2ddfd
6 changed files with 79 additions and 0 deletions
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10
compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
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@ -2920,6 +2920,16 @@ 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!(
"values of the type `{src}` are too big for the current architecture"
)
}
rustc_transmute::Reason::DstSizeOverflow => {
format!(
"values of the type `{dst}` are too big for the current architecture"
)
}
rustc_transmute::Reason::DstHasStricterAlignment {
src_min_align,
dst_min_align,