...
> In particular, you don't get "unused variable" and "variable may not
> have been set before being used" warnings at -O0, because the
> control-flow analysis needed to emit those warnings is not done at -O0.
Right. The point is that I don't get those (apparently) with -O2 either,
with my particular compiler. Hmm. Actually, I *do* get those if I make
sure that some of the other options are set too; my quick test added -O2
but left out some of the -w switches. OK, never mind...
- Thomas
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