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From: Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups: comp.lang.c++
Subject: Re: Performance of unaligned memory-accesses
Date: Thu, 15 Aug 2019 16:56:21 -0700
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Bonita Montero <Bonita.Montero@gmail.com> writes:

>> So it may change because of change of compiler, its version, compiling
>> options, device that it is ran on, settings of operating system or
>> other (possibly unrelated) code in same code-base.
>
> There's no reason why a compiler might get incorrect code because of
> this.  It's undefined behaviour only because of the runtime-behaivour
> of the CPU / OS.

If you think that then you don't understand how the C and
C++ standards define the term "undefined behavior".