Need some clarification about optimization flags, what "exactly" does -O1 do?

[Andrew Haley]

Andrzej Giniewicz wrote:

>> I have not much experience, but it seems like it's not that bad...
>> maybe I should check how m32BitIndicies is initialized?
> 
> and I did it - and it turned out there was case when it was
> uninitialized... looking for this without all your help would be
> really hard :)... the issue is solved and you were right - it's not
> gcc issue :)
> 
> thanks again for great new technique of looking for bugs, for sure
> will come in handy few times!

Excellent.  Have fun.

Andrew.