[ub] A proposal to define signed overflow submitted?
Myria
myriachan at gmail.com
Thu Feb 15 23:14:50 CET 2018
I don't know whether anyone saw this, but apparently, there is a
proposal to make signed integers use two's complement and to make
overflow well-defined as wrapping:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0907r0.html
I don't know whether this person's proposal made it for the
Jacksonville mailing, though.
Removing ones'-complement and sign-magnitude representations is far
less controversial than defining signed overflow as wrapping.
I'm personally on the side of defining signed overflow as wrapping,
but compiler people do have a point that it would inhibit
optimizations in certain cases involving signed integers.
Melissa
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