[Bug c/68371] complex number will be initialized a NAN

[joseph at codesourcery dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68371

--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Not a bug.  GCC does not support imaginary types.  Use __builtin_complex 
(GCC 4.7 or later) or the CMPLX macros implemented based on it, or assign 
to __real__ and __imag__ of a temporary.