Re: changing "configure" to default to "gcc -g -O2 -fwrapv ..."

[Richard Kenner]

> |                                                      though I vaguely
> | recall some complaints that you couldn't build v7 Unix if your compiler
> | generated integer overflow traps.
> 
> this matches what I've told recently by some people who worked at bell
> labs, in the unix room. 

I have recollections of that being the case as well.  Moreover, I
think it's also clearly established that PCC always implemented wrapping
semantics.  What's less clear (at least to me) is what other existing
practice that the ANSI C committee took into account was at the time.