[cfe-dev] libc++ std::isfinite() problem

[Kal Conley]

Hi,
I am getting compile errors trying to compile code which tries to do
something equivalent to std::isfinite((int)0). I get:

test.cc:27:3: error: no matching function for call to 'isfinite'
  std::isfinite((int)0);
  ^~~~~~~~~~~~~
/usr/bin/../lib/c++/v1/cmath:376:1: note: candidate template ignored:
substitution failure [with _A1 = int]
isfinite(_A1 __x)

This compiles OK on all versions of libstdc++ that I have tried. Is
libc++'s implementation correct here? Should it be relying on templates
and only allowing specializations that satisfy std::is_floating_point?

Thanks!
Kal