[Development] Pointer aliasing problem in optimized gcc builds

[Soroush Rabiei]

Ah sorry, I can't reproduce the issue after a complete recompile. I think
the problem is caused by an outdated object file that is not marked to be
recompiled by mingw32-make. Looks like mingw32-make and make (in Linux)
work differently... (Any problem with time-stamps on windows?)

I did some tests today to proof the problem. First I changed contents of a
header that is included in another header, and the second header in
included in a source file. Invoking make (mingw32-make) says there's
nothing to do. Even changing contents of source files, sometimes (almost
15% of my tries) make, do not notice that it should reproduce associated
object files, so there is no g++ invocations.

I was looking to the wrong places all the time. Takes two days for me to
find out

Thanks for all answers
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