RE: [Plib-users] problem with fnt and release mode

[Paul B. <pbl...@di...>]

We use VC++ 6.0 with Service Pack 4 and the Processor Pack (which 
adds Athlon and P4 optimizations and code generation).

The optimizer has been "refined" (not necessarily fixed) with
each service pack.  The processor pack actually introduces a few
new problems (dealing mostly with the floating point optimizations).

The optimizer in VC is very aggressive, unfortunately it is wrong
quite often as a result.

Paul


> -----Original Message-----
> From: Steve Baker [mailto:sjb...@ai...]
> Sent: Thursday, December 21, 2000 12:07 AM
> To: pli...@li...
> Subject: Re: [Plib-users] problem with fnt and release mode
> 
> 
> Scott Shumaker wrote:
>  
> > Well, it only causes problems across functions, i.e.:
> <snip>
> 
> Yes - that seems *incredibly* dangerous to me.  I can imagine a TON of
> places in PLIB where that would break.
> 
> I wonder why it only affects G200/G400 and Radion?
> 
> The OpenGL driver is a DLL - so the compiler doesn't know what driver
> you are using...it's hard to imagine a pointer alias that would trip
> up the optimiser with one driver and not the other.
> 
> Just out of interest, what version of MSVC++ is everyone who sees this
> bug using?   I recollect someone telling me that the 
> optimisations that
> V6 makes are *far* more dangerous than the ones in V7.
> 
> -- 
> Steve Baker   HomeEmail: <sjb...@ai...>
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