Document unaligned reference restrictions #1326

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1. dtolnay commented on Feb 5, 2023

   

   dtolnay

   on Feb 5, 2023

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   As part of this, please also delete this outdated warning:

   reference/src/type-layout.md

   Lines 552 to 558 in b9ccb09

   	<div class="warning">
   	***Warning:*** Dereferencing an unaligned pointer is [undefined behavior] and
   	it is possible to [safely create unaligned pointers to `packed` fields][27060].
   	Like all ways to create undefined behavior in safe Rust, this is a bug.
   	</div>

   reference/src/type-layout.md

   Line 590 in b9ccb09

   [27060]: https://github.com/rust-lang/rust/issues/27060
2. ehuss commented on Jun 27, 2023

   

   ehuss

   on Jun 27, 2023

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   #1367 has removed the warning, but there still needs to be something added about the restriction of creating unaligned references (probably in the pointers page?). Also, I don't think "unaligned" is ever explicitly defined, which probably should be covered.