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Re: bizarre g++ behavior after reinstalling cygwin
On Sun, 29 Jan 2006, Brett Serkez wrote:
> <snip>
> > "i=i++" is either a no-op or nonsense, depending on the
> > interpretation. You should either use "i=i+1" or "i++" (those should
> > be equivalent in modern compilers).
>
> The strick interpretation of i=i++ starts by evaluating the right side
> "i++" to compute a r-value (right value). Since the ++ is after the i,
> it is a post-operation, vs. if it were before the i, in which case it
> would be a pre-operation. So first the value of i would be saved, then
> i incremented, then the saved value would be assigned to the l-value
> (left value) which in this case is i, setting i back to its original
> value.
Yes, that was the nonsence interpretation. :-)
> You could use "i=++i" which would increment i, then save the r- value
> and assign to the l-value, but then again, i++ would be much simplier,
> no?
Right. But there may be other style mishaps in Vadim's code that gcc 3.4
doesn't like. We just don't know.
Igor
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