named warnings & individual warning control

[Geoffrey Keating]

Stan Shebs <shebs@apple.com> writes:

> Mark Mitchell wrote:
> 
> > [...] I have long argued that only front ends should be permitted to
> > issue warnings, and that all attempts to use back-end data flow
> > analysis to issue warnings are mistaken, no matter how clever they
> > seem.
> >
> An interesting point. Continuously we get complaints from our users
> about how uninitialized variable warnings are not available without
> turning on optimizations, to the point that some people want us to
> disable -O0.
> 
> So if I understand what you're getting at, it would be to have some
> weaker form of flow analysis in the front end to implement the
> uninitialized warnings, even if that means reporting some false
> positives?

We also get continual complaints about false positives.