[Bug libstdc++/48760] [4.6 Regression] std::complex constructor buggy in the face of NaN's

[gdr at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48760

--- Comment #30 from Gabriel Dos Reis <gdr at gcc dot gnu.org> 2011-04-29 23:52:32 UTC ---
(In reply to comment #29)
> This is now fixed in 4_6-branch too in C++03 mode, not in C++0x mode, where we
> would need list-initialization of __complex__.  If people believe we can /
> should do something else in the release branch, I'm all ears: if for example
> people consider a better trade-off for the branch removing the constexpr from
> the constructor in order to initialized in the body for C++0x mode too, I'm ok
> with that.

I'm of course biased here, but I value constexpr-ability over complex
numbers with parts that are NaNs.  *If* we cannot have list-initialization
for _Complex, then I suggest we close this PR as WONTFIX.