https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90885
--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to David Malcolm from comment #11) > Warning for "2 ^ INT" seems reasonable, maybe just for that (I think I agree > with comment #6). > > Not sure what to call it: "-Wexclusive-or"??? I suppose -Wxor is a bit cryptic-lookin' What about -Wxor-used-as-pow ? > I think we'd want to *not* warn if either of the operands are from a macro > expansion. > > I think both operands ought to be decimal integers to trigger the warning. And not warn if the C++ 'xor' keyword is used, as nobody's going to think that "2 xor 8" means raising to the 8th power. > I like the wording from comment #2: "2 ^ 30 is 28, not 1073741824.", to make > it clear what's going on (I hope). Yes, that's also how I phrased the various pull requests and bug reports I've submitted today.
