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avoid using 'place projection' for only some of the projections #2253

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avoid using 'place projection' for only some of the projections #2253

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6 changes: 2 additions & 4 deletions src/behavior-considered-undefined.md
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Expand Up @@ -28,10 +28,8 @@ r[undefined.pointer-access]
a misaligned pointer].

r[undefined.place-projection]
* Performing a place projection that violates the requirements of [in-bounds
pointer arithmetic](pointer#method.offset). A place projection is a [field
expression][project-field], a [tuple index expression][project-tuple], or an
[array/slice index expression][project-slice].
* Performing an offsetting place projection that violates the requirements of [in-bounds pointer arithmetic](pointer#method.offset).
An offsetting place projection is a [field expression][project-field], a [tuple index expression][project-tuple], or an [array/slice index expression][project-slice].

r[undefined.alias]
* Breaking the pointer aliasing rules. The exact aliasing rules are not determined yet, but here is an outline of the general principles:
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