[Bug middle-end/48760] [4.6 / 4.7 Regression (?)] std::complex constructor buggy in the face of NaN's
paolo.carlini at oracle dot com
gcc-bugzilla@gcc.gnu.org
Mon Apr 25 12:08:00 GMT 2011
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48760
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jsm28 at gcc dot gnu.org
Component|libstdc++ |middle-end
Summary|std::complex constructor |[4.6 / 4.7 Regression (?)]
|buggy in the face of NaN's |std::complex constructor
| |buggy in the face of NaN's
Severity|blocker |normal
--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-04-25 12:07:44 UTC ---
I don't think this is a library proper issue, how can it be? We have just:
constexpr // In C++0x mode
complex(float __r = 0.0f, float __i = 0.0f)
: _M_value(__r + __i * 1.0fi) { }
where _M_value is a __complex__ float. Joseph, can you have a look? By the way,
what is reported did *not* happen in 4.5.x and nothing changed in the lib in
this area in the meanwhile (besides the C++0x bits, not at issue here).
Note a complete C++ snippet would be:
#include <complex>
#include <limits>
#include <iostream>
int main()
{
std::complex<float> c(0, std::numeric_limits<float>::quiet_NaN());
std::cout << c << std::endl;
}
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