Il 19/07/20 12:51, Oswald Buddenhagen ha scritto:
- the compiler becomes intentionally belligerent, in which case an
override switch will be provided as well (if not instantly, then after
the outcry that immediately follows)
File under "surely no compiler will optimize away X!", for X in * unspecified pointer comparisons * signed integer over/underflows * data races (on bitfields) * volatile in lieu of proper atomic access* proving that a loop doesn't terminate, hence the loop is never entered, and applying dead code optimization to it
* ...To do any of the above is not belligerent, AND you have no way to switch the above optimizations off. (Also, you don't want to.)
In other words: this is playing with fire in the long term run, that's why I suggested to bypass the C++ abstract machine, rely on ABI and use ASM.
My 2 c, -- Giuseppe D'Angelo | giuseppe.dang...@kdab.com | Senior Software Engineer KDAB (France) S.A.S., a KDAB Group company Tel. France +33 (0)4 90 84 08 53, http://www.kdab.com KDAB - The Qt, C++ and OpenGL Experts
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