On Fri, Oct 27, 2017 at 6:28 PM, Joseph Myers <jos...@codesourcery.com> wrote: > No existing glibc version defines math_errhandling based on > __NO_MATH_ERRNO__. I'd expect such a change to come with a glibc patch, > and indeed a GCC execution test of the value of math_errhandling to make > sure the compiler's behavior isn't contradicting what's declared by the > runtime libraries. Also, the default should not be changed for pre-C99 C > standard modes (or pre-C++11 C++, I suppose).
Should we also get the __ieee764_ entries used if the compiler sets __NO_MATH_ERRNO__? That is, if the librari advertises not setting errno via math_errhandling is it still allowed to set/clobber errno anyways? Richard. > -- > Joseph S. Myers > jos...@codesourcery.com
