Matthias Krüger 9fce3dc685
Rollup merge of #124761 - Urgau:ref-casting_bigger_slice_index, r=jieyouxu
Fix insufficient logic when searching for the underlying allocation

This PR fixes the logic inside the `invalid_reference_casting` lint, when trying to lint on bigger memory layout casts.

More specifically when looking for the "underlying allocation" we were wrongly assuming that when we got `&mut slice[index]` that `slice[index]` was the allocation, but it's not.

Fixes https://github.com/rust-lang/rust/issues/124685
2024-05-08 17:03:09 +02:00
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