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A comment on Everything in C is undefined behavior. Parent comment

Re:Everything in C is undefined behavior by RobotToaster on Wednesday May 20, 2026 @06:52AM (#48205737)
With volatile it could be changed by an interrupt service routine between reads, so it makes sense.
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Re:Everything in C is undefined behavior by nomel on Wednesday May 20, 2026 @02:04PM (#48211648)
Or, it could be hardware that has a "clear flag on read" type behavior.
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