GCC and out-of-range constant array indexes?

[Basile Starynkevitch]

On Fri, 8 Oct 2010 09:54:07 -0700
Gary Funck <gary@intrepid.com> wrote:

> On 10/08/10 18:38:29, Basile Starynkevitch wrote:
> > I am not an expert on these optimizations, but why would you want that? 
> 
> I routinely compile/build with "-O0 -g3" because the code is easier to debug.  I
> also admit that I compile/build with "-O0" because it is faster than
> "-O2" or "-O3" for example, and during development I am more interested
> in faster turn-around time on builds than faster execution time.

I understand that. Using "-O1 -g3" is a suitable compromise also.
> 
> Also, when I compile/build projects, I try to use the maximum level of warnings
> and checking that the source code base will support.  I am willing to trade
> off some support/build time in favor of more thorough warnings.

You could build both a release version with "-O2" or "-O2 -g" and a
development version with "-O0 -g3".

Howeer, I see a logic in needing -O2 to get some warnings.
Optimizations are expensive, and they compute static properties of the
source code, which are usable (& necessary and used) for additional
warnings.

Cheers.


-- 
Basile STARYNKEVITCH         http://starynkevitch.net/Basile/
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