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Subject: Re: Undefined behaviour in C [was Re: The Cost of Dynamism]
Date: Fri, 25 Mar 2016 22:56:51 -0400
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Xref: csiph.com comp.lang.python:105721

On Fri, Mar 25, 2016, at 22:46, Steven D'Aprano wrote:
> Culturally, C compiler writers have a preference for using undefined
> behaviour to allow optimizations, even if it means changing the semantics
> of your code. The C compiler is allowed to ignore your code, move it
> around
> so that things happen in a different order, or add its own code, even if
> that changes the semantics of the code.

Er, the point of undefined behavior is that your code doesn't *have*
semantics.