https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81122
--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #11) > (In reply to Ben Woodard from comment #10) > > Also note: > > https://connect.microsoft.com/VisualStudio/feedback/details/742775 > > > > My reading of: > > https://wg21.link/lwg2381 > > > > is that if the first part of the number includes a '.' then the portion > > after the 'p' or 'P' is not part of the number and is left in the string. > > The example is > > 0x1a.bp+07p > > > > So I believe that your assertion that 2381 applies in this situation is not > > accurate. This example refers to the number: 26.6875 (16+10+11/16) and > > because there is already a hexadecimal point '.' separating the integral > > portion from the fractional portion the 'p' is not part of the number. > > That just means it's a bad example in the proposed resolution, but the > example is not normative anyway. No, there's nothing wrong with the example. I don't know how you're interpreting the spec but it seems wrong.