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Ran 13 Oct 2022 03:44PM UTC

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Committed 13 Oct 2022 03:44PM UTC coverage: 92.232% (+0.2%) from 92.068%

Job # PYTHON=python2

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push

travis-ci-com

Committed by GitHub

Commit Message

Fix all UBSan failures on Arm64 (#154)

* Add UBSan to the list of sanitizers

Signed-off-by: Matthew Gretton-Dann <matthew.gretton-dann@arm.com>

* Fix alignment warnings when reading ELF files

The undefined behaviour sanitizer issues warnings when processing ELF
files as the relocation and symbol structures may not be naturally
aligned in memory.

We solve this by memcpy'ing the appropriate data into a temporary
variable.

This isn't necessarily very performant - but this isn't performance
critical code.

Signed-off-by: Matthew Gretton-Dann <matthew.gretton-dann@arm.com>

* Fix undefined behaviours in integer promotions

The Undefined Behaviour Sanitizer was reporting issues with how
instruction bit patterns were generated.  This is due to integer
promotion rules.

This commit fixes all these problems by making the unsignedness of
values more explicit.

Signed-off-by: Matthew Gretton-Dann <matthew.gretton-dann@arm.com>

* Limit macOS to aligned load/store

Signed-off-by: Alan Jowett <alanjo@microsoft.com>

Signed-off-by: Matthew Gretton-Dann <matthew.gretton-dann@arm.com>
Signed-off-by: Alan Jowett <alanjo@microsoft.com>
Co-authored-by: Alan Jowett <alanjo@microsoft.com>

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