bizarre g++ behavior after reinstalling cygwin

[Igor Peshansky]

On Sun, 29 Jan 2006, Vadim Oganesyan wrote:

> I just reinstalled cygwin on my laptop (running winXP) and g++ is acting
> most peculiar.
>
> The code that has been working fine for thepast 2~3 months no longer
> works (the programs are still working on other machines). the seem to
> compile OK, but don't generate output files, or generate nonsense, or
> get trapped in loops indefinitely.

We'll need to see actual code snippets that misbehave before we can help.
However, judging by your example below, I can guess that most of these are
against the general C++ coding practices.  GCC 3.4 is much stricter in
that regard than previous versions, and does not necessarily try to make
sense of such code, which is probably what's happening in your case.  Did
you try compiling with "-Wall"?

> Digging in I found that none of the "i=i++" calls inside for-loops work.
> I have never heard of anything of sorts, still changes ++ to +1, this
> fixed the loops, but apparently there are still problems...

"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).

> please help, have i lost my mind?

That's for you to say, but I suspect your code would benefit from some
review and rewrite.  Google for "C++ code style guide".
HTH,
	Igor
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