[Bug c++/111897] New: Initialization of _Float16 with f.p. constant gives false warning

[agner at agner dot org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111897

            Bug ID: 111897
           Summary: Initialization of _Float16 with f.p. constant gives
                    false warning
           Product: gcc
           Version: 13.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: agner at agner dot org
  Target Milestone: ---

Initializing a _Float16 gives false warning. Example:

  _Float16 A = 1.0;

This gives the "warning: converting to ‘_Float16’ from ‘double’ with greater
conversion rank", with a link to 
https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p1467r4.html#implicit

However, this link says that implicit conversion is allowed in initialization
with a constant. See section 5.7.3 and the example in 5.6.1 in the linked
document.