https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86598
--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot
com> ---
On Fri, 20 Jul 2018, zhonghao at pku dot org.cn wrote:
> g++ rejects the above code:
You don't say what options you are using, or what compiler version; please
include that in future bug reports that assert something about how the
compiler behaves. For standards conformance issues like this you should
be using strict conformance modes. I don't see this rejection with any of
-std=c++98, -std=c++11, -std=c++14. That would be what was fixed for
C++11/C++14 modes with r234213 ("Hex floats are new in C++1z."), and for
C++98 mode as bug 23827.
