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by pjc50
700 days ago
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No, undefined behavior does not mean "not defined by the standard", it means those places where the standard says "undefined behavior". And then the long and complicated war over "the compiler may assume that UB does not happen and then optimize on that basis". You might be able to tighten it up in some specific cases, and those battles are being fought elsewhere, but there's stuff like lock lifetimes which you cannot do without substantial extra annotations inside or outside the language. |
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