Command line options and pragmas

[Robert Dewar]

DJ Delorie wrote:

>>Seems rather marginal to worry about this. Surely this is letting
>>best be the enemy of good.
>>    
>>
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>I agree.  I was only noting the objections last time I suggested
>something like this.
>
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>>And as for it being a bug, that's just a matter of clear
>>documentation.
>>    
>>
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>The problem was that you *can't* have clear documentation, because it
>often depends on how the optimizer mucks with the code.
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I guess I don't see this, whether the warning is issued might depend on 
this,
but I don't see that the suppression mechanism would be accpted.

>If was can accept docs that say "it mostly works like this, but
>sometimes it does other interesting things instead, and it might
>change from release to release", then the task becomes significantly
>easier.
>  
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