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Apply noundef attribute to all scalar types which do not permit raw init #94157

Merged
merged 2 commits into from
Feb 28, 2022
Merged

Apply noundef attribute to all scalar types which do not permit raw init #94157

merged 2 commits into from
Feb 28, 2022

Commits on Feb 26, 2022

  1. Apply noundef attribute to all scalar types which do not permit raw init 

    Beyond `&`/`&mut`/`Box`, this covers `char`, discriminants, `NonZero*`, etc.
All such types currently cause a Miri error if left uninitialized,
and an `invalid_value` lint in cases like `mem::uninitialized::<char>()`

Note that this _does not_ change whether or not it is UB for `u64` (or
other integer types with no invalid values) to be undef.
    @erikdesjardins
    erikdesjardins committed Feb 26, 2022
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Commits on Feb 27, 2022

  1. make pgo-branch-weights test not dependent on argument attributes

    @erikdesjardins
    erikdesjardins committed Feb 27, 2022
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