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by aw1621107
76 days ago
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> The compiler cannot remove or reorder instructions that have a visible effect. You might be surprised! When it comes to UB compilers can and do reorder/eliminate instructions with side effects, resulting in "time travel" [0]. IIRC the upcoming version of the C standard bans this behavior, but the C++ standard still allows it (for now, at least). [0]: https://devblogs.microsoft.com/oldnewthing/20140627-00/?p=63... |
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