ni...@lysator.liu.se (Niels Möller) writes: Bit it's surprising to me too that also non-overflowing left shift of negative values is undefined. So it seems generally unsafe to use shift on signed types, except possibly for constants. It is pretty silly. By leaving a useful operation undefined, one cannot use it anywhere if one cares about perfect portability. Here we have an operation which in practce will work anywhere made somewhat useless by the C/C++ committees.
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